Search (4780 results, page 1 of 239)

  1. Broadus, R.N.: Online catalogs and their users (1983) 0.15
    0.14789747 = product of:
      0.29579493 = sum of:
        0.29579493 = product of:
          0.59158987 = sum of:
            0.59158987 = weight(_text_:r.n in 2419) [ClassicSimilarity], result of:
              0.59158987 = score(doc=2419,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.4664845 = fieldWeight in 2419, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.125 = fieldNorm(doc=2419)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  2. Sharma, R.N.: Rangahanathan's impact on international librarianship through information technology (1992) 0.15
    0.14789747 = product of:
      0.29579493 = sum of:
        0.29579493 = product of:
          0.59158987 = sum of:
            0.59158987 = weight(_text_:r.n in 2691) [ClassicSimilarity], result of:
              0.59158987 = score(doc=2691,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.4664845 = fieldWeight in 2691, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.125 = fieldNorm(doc=2691)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Bland, R.N.: Evaluating the performance of the Online Public Access Catalog : a redefinition of basic measures (1989) 0.15
    0.14789747 = product of:
      0.29579493 = sum of:
        0.29579493 = product of:
          0.59158987 = sum of:
            0.59158987 = weight(_text_:r.n in 4595) [ClassicSimilarity], result of:
              0.59158987 = score(doc=4595,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.4664845 = fieldWeight in 4595, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.125 = fieldNorm(doc=4595)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  4. Oddy, R.N.: Laboratory tests : automatic systems (1981) 0.15
    0.14789747 = product of:
      0.29579493 = sum of:
        0.29579493 = product of:
          0.59158987 = sum of:
            0.59158987 = weight(_text_:r.n in 3153) [ClassicSimilarity], result of:
              0.59158987 = score(doc=3153,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.4664845 = fieldWeight in 3153, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.125 = fieldNorm(doc=3153)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  5. Oddy, R.N.; Liddy, E.D.; Balakrishnan, B.; Bishop, A.; Elewononi, J.; Martin, E.: Towards the use of situational information in information retrieval (1992) 0.13
    0.1294103 = product of:
      0.2588206 = sum of:
        0.2588206 = product of:
          0.5176412 = sum of:
            0.5176412 = weight(_text_:r.n in 288) [ClassicSimilarity], result of:
              0.5176412 = score(doc=288,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.283174 = fieldWeight in 288, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.109375 = fieldNorm(doc=288)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  6. Belkin, N.J.; Oddy, R.N.; Brooks, H.M.: Ask for information retrieval : Pt.1: Background and theory; Pt.2: Results of a study (1982) 0.13
    0.1294103 = product of:
      0.2588206 = sum of:
        0.2588206 = product of:
          0.5176412 = sum of:
            0.5176412 = weight(_text_:r.n in 2590) [ClassicSimilarity], result of:
              0.5176412 = score(doc=2590,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.283174 = fieldWeight in 2590, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2590)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  7. Ackermann, E.: Piaget's constructivism, Papert's constructionism : what's the difference? (2001) 0.12
    0.1237074 = product of:
      0.2474148 = sum of:
        0.2474148 = product of:
          0.4948296 = sum of:
            0.19308732 = weight(_text_:3a in 692) [ClassicSimilarity], result of:
              0.19308732 = score(doc=692,freq=2.0), product of:
                0.41227284 = queryWeight, product of:
                  8.478011 = idf(docFreq=24, maxDocs=44218)
                  0.048628487 = queryNorm
                0.46834838 = fieldWeight in 692, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.478011 = idf(docFreq=24, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=692)
            0.30174226 = weight(_text_:2c in 692) [ClassicSimilarity], result of:
              0.30174226 = score(doc=692,freq=2.0), product of:
                0.51537806 = queryWeight, product of:
                  10.598275 = idf(docFreq=2, maxDocs=44218)
                  0.048628487 = queryNorm
                0.5854775 = fieldWeight in 692, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  10.598275 = idf(docFreq=2, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=692)
          0.5 = coord(2/4)
      0.5 = coord(1/2)
    
    Content
    Vgl.: https://www.semanticscholar.org/paper/Piaget-%E2%80%99-s-Constructivism-%2C-Papert-%E2%80%99-s-%3A-What-%E2%80%99-s-Ackermann/89cbcc1e740a4591443ff4765a6ae8df0fdf5554. Darunter weitere Hinweise auf verwandte Beiträge. Auch unter: Learning Group Publication 5(2001) no.3, S.438.
  8. Davenport, E.R.; Procter, R.N.: ¬The situated intermediary : remote advice giving in a distributed reference environment (1997) 0.11
    0.110923104 = product of:
      0.22184621 = sum of:
        0.22184621 = product of:
          0.44369242 = sum of:
            0.44369242 = weight(_text_:r.n in 310) [ClassicSimilarity], result of:
              0.44369242 = score(doc=310,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.0998634 = fieldWeight in 310, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.09375 = fieldNorm(doc=310)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  9. Ethics, information and technology : readings (1998) 0.11
    0.110923104 = product of:
      0.22184621 = sum of:
        0.22184621 = product of:
          0.44369242 = sum of:
            0.44369242 = weight(_text_:r.n in 3776) [ClassicSimilarity], result of:
              0.44369242 = score(doc=3776,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.0998634 = fieldWeight in 3776, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.09375 = fieldNorm(doc=3776)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Editor
    Stichler, R.N. u. R. Hauptman
  10. Kostoff, R.N.; Eberhart, H.J.; Toothman, D.R.: Hypersonic and supersonic flow roadmaps using bibliometrics and database tomography (1999) 0.11
    0.110923104 = product of:
      0.22184621 = sum of:
        0.22184621 = product of:
          0.44369242 = sum of:
            0.44369242 = weight(_text_:r.n in 4304) [ClassicSimilarity], result of:
              0.44369242 = score(doc=4304,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.0998634 = fieldWeight in 4304, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.09375 = fieldNorm(doc=4304)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  11. Sung, R.N.: Scott and the race for the South Pole : the heroic failure of cataloguing the Web (1999) 0.11
    0.110923104 = product of:
      0.22184621 = sum of:
        0.22184621 = product of:
          0.44369242 = sum of:
            0.44369242 = weight(_text_:r.n in 418) [ClassicSimilarity], result of:
              0.44369242 = score(doc=418,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.0998634 = fieldWeight in 418, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.09375 = fieldNorm(doc=418)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  12. Kostoff, R.N.: Where is the research in the research literature? (2012) 0.11
    0.110923104 = product of:
      0.22184621 = sum of:
        0.22184621 = product of:
          0.44369242 = sum of:
            0.44369242 = weight(_text_:r.n in 374) [ClassicSimilarity], result of:
              0.44369242 = score(doc=374,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                1.0998634 = fieldWeight in 374, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.09375 = fieldNorm(doc=374)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  13. Carter, J.A.: PASSPORT/PRISM: authors and titles and MARC : oh my! (1993) 0.10
    0.0973721 = sum of:
      0.044664193 = product of:
        0.17865677 = sum of:
          0.17865677 = weight(_text_:authors in 527) [ClassicSimilarity], result of:
            0.17865677 = score(doc=527,freq=2.0), product of:
              0.22168823 = queryWeight, product of:
                4.558814 = idf(docFreq=1258, maxDocs=44218)
                0.048628487 = queryNorm
              0.80589205 = fieldWeight in 527, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.558814 = idf(docFreq=1258, maxDocs=44218)
                0.125 = fieldNorm(doc=527)
        0.25 = coord(1/4)
      0.05270791 = product of:
        0.10541582 = sum of:
          0.10541582 = weight(_text_:22 in 527) [ClassicSimilarity], result of:
            0.10541582 = score(doc=527,freq=2.0), product of:
              0.17028868 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.048628487 = queryNorm
              0.61904186 = fieldWeight in 527, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.125 = fieldNorm(doc=527)
        0.5 = coord(1/2)
    
    Source
    OCLC systems and services. 9(1993) no.3, S.20-22
  14. Broadhurst, R.N.: Caere PageKeeper (1993) 0.09
    0.09243592 = product of:
      0.18487184 = sum of:
        0.18487184 = product of:
          0.36974367 = sum of:
            0.36974367 = weight(_text_:r.n in 6304) [ClassicSimilarity], result of:
              0.36974367 = score(doc=6304,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                0.91655284 = fieldWeight in 6304, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.078125 = fieldNorm(doc=6304)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  15. Robinson, P.: ¬The digitization of primary textual resources (1994) 0.09
    0.09243592 = product of:
      0.18487184 = sum of:
        0.18487184 = product of:
          0.36974367 = sum of:
            0.36974367 = weight(_text_:r.n in 7089) [ClassicSimilarity], result of:
              0.36974367 = score(doc=7089,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                0.91655284 = fieldWeight in 7089, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.078125 = fieldNorm(doc=7089)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Footnote
    Rez. in: Program 28(1994) no.4, S.448-449 (R.N. Broadhurst)
  16. Librarianship and information work worldwide 1993 : an annual survey (1993) 0.09
    0.09243592 = product of:
      0.18487184 = sum of:
        0.18487184 = product of:
          0.36974367 = sum of:
            0.36974367 = weight(_text_:r.n in 624) [ClassicSimilarity], result of:
              0.36974367 = score(doc=624,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                0.91655284 = fieldWeight in 624, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.078125 = fieldNorm(doc=624)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Footnote
    Rez. in: Library journal 118(1993) no.14, S.228 (R.N. Sharma); Bibliothek: Forschung u. Praxis 19(1995) H.1, S.123-124 (W. Enderle)
  17. Performance measures for government sponsored basic research (1996) 0.09
    0.09243592 = product of:
      0.18487184 = sum of:
        0.18487184 = product of:
          0.36974367 = sum of:
            0.36974367 = weight(_text_:r.n in 6695) [ClassicSimilarity], result of:
              0.36974367 = score(doc=6695,freq=2.0), product of:
                0.40340683 = queryWeight, product of:
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.048628487 = queryNorm
                0.91655284 = fieldWeight in 6695, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.29569 = idf(docFreq=29, maxDocs=44218)
                  0.078125 = fieldNorm(doc=6695)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Editor
    Kostoff, R.N.
  18. Gödert, W.; Hubrich, J.; Boteram, F.: Thematische Recherche und Interoperabilität : Wege zur Optimierung des Zugriffs auf heterogen erschlossene Dokumente (2009) 0.09
    0.091906786 = sum of:
      0.075435564 = product of:
        0.30174226 = sum of:
          0.30174226 = weight(_text_:2c in 193) [ClassicSimilarity], result of:
            0.30174226 = score(doc=193,freq=2.0), product of:
              0.51537806 = queryWeight, product of:
                10.598275 = idf(docFreq=2, maxDocs=44218)
                0.048628487 = queryNorm
              0.5854775 = fieldWeight in 193, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                10.598275 = idf(docFreq=2, maxDocs=44218)
                0.0390625 = fieldNorm(doc=193)
        0.25 = coord(1/4)
      0.016471222 = product of:
        0.032942444 = sum of:
          0.032942444 = weight(_text_:22 in 193) [ClassicSimilarity], result of:
            0.032942444 = score(doc=193,freq=2.0), product of:
              0.17028868 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.048628487 = queryNorm
              0.19345059 = fieldWeight in 193, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0390625 = fieldNorm(doc=193)
        0.5 = coord(1/2)
    
    Source
    https://opus4.kobv.de/opus4-bib-info/frontdoor/index/index/searchtype/authorsearch/author/%22Hubrich%2C+Jessica%22/docId/703/start/0/rows/20
  19. Kostoff, R.N.; Rio, J.A. del; Humenik, J.A.; Garcia, E.O.; Ramirez, A.M.: Citation mining : integrating text mining and bibliometrics for research user profiling (2001) 0.09
    0.085114785 = sum of:
      0.011166048 = product of:
        0.044664193 = sum of:
          0.044664193 = weight(_text_:authors in 6850) [ClassicSimilarity], result of:
            0.044664193 = score(doc=6850,freq=2.0), product of:
              0.22168823 = queryWeight, product of:
                4.558814 = idf(docFreq=1258, maxDocs=44218)
                0.048628487 = queryNorm
              0.20147301 = fieldWeight in 6850, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.558814 = idf(docFreq=1258, maxDocs=44218)
                0.03125 = fieldNorm(doc=6850)
        0.25 = coord(1/4)
      0.07394873 = product of:
        0.14789747 = sum of:
          0.14789747 = weight(_text_:r.n in 6850) [ClassicSimilarity], result of:
            0.14789747 = score(doc=6850,freq=2.0), product of:
              0.40340683 = queryWeight, product of:
                8.29569 = idf(docFreq=29, maxDocs=44218)
                0.048628487 = queryNorm
              0.36662114 = fieldWeight in 6850, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.29569 = idf(docFreq=29, maxDocs=44218)
                0.03125 = fieldNorm(doc=6850)
        0.5 = coord(1/2)
    
    Abstract
    Identifying the users and impact of research is important for research performers, managers, evaluators, and sponsors. It is important to know whether the audience reached is the audience desired. It is useful to understand the technical characteristics of the other research/development/applications impacted by the originating research, and to understand other characteristics (names, organizations, countries) of the users impacted by the research. Because of the many indirect pathways through which fundamental research can impact applications, identifying the user audience and the research impacts can be very complex and time consuming. The purpose of this article is to describe a novel approach for identifying the pathways through which research can impact other research, technology development, and applications, and to identify the technical and infrastructure characteristics of the user population. A novel literature-based approach was developed to identify the user community and its characteristics. The research performed is characterized by one or more articles accessed by the Science Citation Index (SCI) database, beccause the SCI's citation-based structure enables the capability to perform citation studies easily. The user community is characterized by the articles in the SCI that cite the original research articles, and that cite the succeeding generations of these articles as well. Text mining is performed on the citing articles to identify the technical areas impacted by the research, the relationships among these technical areas, and relationships among the technical areas and the infrastructure (authors, journals, organizations). A key component of text mining, concept clustering, was used to provide both a taxonomy of the citing articles' technical themes and further technical insights based on theme relationships arising from the grouping process. Bibliometrics is performed on the citing articles to profile the user characteristics. Citation Mining, this integration of citation bibliometrics and text mining, is applied to the 307 first generation citing articles of a fundamental physics article on the dynamics of vibrating sand-piles. Most of the 307 citing articles were basic research whose main themes were aligned with those of the cited article. However, about 20% of the citing articles were research or development in other disciplines, or development within the same discipline. The text mining alone identified the intradiscipline applications and extradiscipline impacts and applications; this was confirmed by detailed reading of the 307 abstracts. The combination of citation bibliometrics and text mining provides a synergy unavailable with each approach taken independently. Furthermore, text mining is a REQUIREMENT for a feasible comprehensive research impact determination. The integrated multigeneration citation analysis required for broad research impact determination of highly cited articles will produce thousands or tens or hundreds of thousands of citing article Abstracts.
  20. Hotho, A.; Bloehdorn, S.: Data Mining 2004 : Text classification by boosting weak learners based on terms and concepts (2004) 0.08
    0.07769166 = sum of:
      0.057926193 = product of:
        0.23170477 = sum of:
          0.23170477 = weight(_text_:3a in 562) [ClassicSimilarity], result of:
            0.23170477 = score(doc=562,freq=2.0), product of:
              0.41227284 = queryWeight, product of:
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.048628487 = queryNorm
              0.56201804 = fieldWeight in 562, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.046875 = fieldNorm(doc=562)
        0.25 = coord(1/4)
      0.019765466 = product of:
        0.039530933 = sum of:
          0.039530933 = weight(_text_:22 in 562) [ClassicSimilarity], result of:
            0.039530933 = score(doc=562,freq=2.0), product of:
              0.17028868 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.048628487 = queryNorm
              0.23214069 = fieldWeight in 562, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046875 = fieldNorm(doc=562)
        0.5 = coord(1/2)
    
    Content
    Vgl.: http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CEAQFjAA&url=http%3A%2F%2Fciteseerx.ist.psu.edu%2Fviewdoc%2Fdownload%3Fdoi%3D10.1.1.91.4940%26rep%3Drep1%26type%3Dpdf&ei=dOXrUMeIDYHDtQahsIGACg&usg=AFQjCNHFWVh6gNPvnOrOS9R3rkrXCNVD-A&sig2=5I2F5evRfMnsttSgFF9g7Q&bvm=bv.1357316858,d.Yms.
    Date
    8. 1.2013 10:22:32

Languages

Types

  • a 4040
  • m 444
  • el 208
  • s 189
  • b 40
  • x 37
  • i 24
  • r 22
  • ? 8
  • d 4
  • n 4
  • p 4
  • u 2
  • z 2
  • ag 1
  • au 1
  • h 1
  • More… Less…

Themes

Subjects

Classifications