Search (144 results, page 1 of 8)

  • × year_i:[1990 TO 2000}
  • × type_ss:"el"
  1. Dunning, A.: Do we still need search engines? (1999) 0.05 
    0.05037771 = product of:
  0.10075542 = sum of:
    0.10075542 = sum of:
      0.01339476 = weight(_text_:a in 6021) [ClassicSimilarity], result of:
        0.01339476 = score(doc=6021,freq=4.0), product of:
          0.053105544 = queryWeight, product of:
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.046056706 = queryNorm
          0.25222903 = fieldWeight in 6021, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.109375 = fieldNorm(doc=6021)
      0.087360665 = weight(_text_:22 in 6021) [ClassicSimilarity], result of:
        0.087360665 = score(doc=6021,freq=2.0), product of:
          0.16128273 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046056706 = queryNorm
          0.5416616 = fieldWeight in 6021, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.109375 = fieldNorm(doc=6021)
  0.5 = coord(1/2)
    Source
    Ariadne. 1999, no.22
    Type
    a
  2. Birmingham, J.: Internet search engines (1996) 0.04 
    0.04149951 = product of:
  0.08299902 = sum of:
    0.08299902 = sum of:
      0.008118451 = weight(_text_:a in 5664) [ClassicSimilarity], result of:
        0.008118451 = score(doc=5664,freq=2.0), product of:
          0.053105544 = queryWeight, product of:
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.046056706 = queryNorm
          0.15287387 = fieldWeight in 5664, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.09375 = fieldNorm(doc=5664)
      0.07488057 = weight(_text_:22 in 5664) [ClassicSimilarity], result of:
        0.07488057 = score(doc=5664,freq=2.0), product of:
          0.16128273 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046056706 = queryNorm
          0.46428138 = fieldWeight in 5664, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.09375 = fieldNorm(doc=5664)
  0.5 = coord(1/2)
    Abstract
    Basically a good listing in table format of features from the major search engines
    Date
    10.11.1996 16:36:22
  3. Electronic Dewey (1993) 0.03 
    0.02766634 = product of:
  0.05533268 = sum of:
    0.05533268 = sum of:
      0.0054123 = weight(_text_:a in 1088) [ClassicSimilarity], result of:
        0.0054123 = score(doc=1088,freq=2.0), product of:
          0.053105544 = queryWeight, product of:
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.046056706 = queryNorm
          0.10191591 = fieldWeight in 1088, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.0625 = fieldNorm(doc=1088)
      0.04992038 = weight(_text_:22 in 1088) [ClassicSimilarity], result of:
        0.04992038 = score(doc=1088,freq=2.0), product of:
          0.16128273 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046056706 = queryNorm
          0.30952093 = fieldWeight in 1088, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0625 = fieldNorm(doc=1088)
  0.5 = coord(1/2)
    Abstract
    The CD-ROM version of the 20th DDC ed., featuring advanced online search and windowing techniques, full-text indexing, personal notepad, LC subject headings linked to DDC numbers and a database of all DDC changes
    Footnote
    Rez. in: Cataloging and classification quarterly 19(1994) no.1, S.134-137 (M. Carpenter). - Inzwischen existiert auch eine Windows-Version: 'Electronic Dewey for Windows', vgl. Knowledge organization 22(1995) no.1, S.17
  4. Priss, U.: Faceted knowledge representation (1999) 0.03 
    0.026575929 = product of:
  0.053151857 = sum of:
    0.053151857 = sum of:
      0.009471525 = weight(_text_:a in 2654) [ClassicSimilarity], result of:
        0.009471525 = score(doc=2654,freq=8.0), product of:
          0.053105544 = queryWeight, product of:
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.046056706 = queryNorm
          0.17835285 = fieldWeight in 2654, product of:
            2.828427 = tf(freq=8.0), with freq of:
              8.0 = termFreq=8.0
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.0546875 = fieldNorm(doc=2654)
      0.043680333 = weight(_text_:22 in 2654) [ClassicSimilarity], result of:
        0.043680333 = score(doc=2654,freq=2.0), product of:
          0.16128273 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046056706 = queryNorm
          0.2708308 = fieldWeight in 2654, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0546875 = fieldNorm(doc=2654)
  0.5 = coord(1/2)
    Abstract
    Faceted Knowledge Representation provides a formalism for implementing knowledge systems. The basic notions of faceted knowledge representation are "unit", "relation", "facet" and "interpretation". Units are atomic elements and can be abstract elements or refer to external objects in an application. Relations are sequences or matrices of 0 and 1's (binary matrices). Facets are relational structures that combine units and relations. Each facet represents an aspect or viewpoint of a knowledge system. Interpretations are mappings that can be used to translate between different representations. This paper introduces the basic notions of faceted knowledge representation. The formalism is applied here to an abstract modeling of a faceted thesaurus as used in information retrieval.
    Date
    22. 1.2016 17:30:31
    Type
    a
  5. Priss, U.: Description logic and faceted knowledge representation (1999) 0.03 
    0.02513834 = product of:
  0.05027668 = sum of:
    0.05027668 = sum of:
      0.012836397 = weight(_text_:a in 2655) [ClassicSimilarity], result of:
        0.012836397 = score(doc=2655,freq=20.0), product of:
          0.053105544 = queryWeight, product of:
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.046056706 = queryNorm
          0.24171482 = fieldWeight in 2655, product of:
            4.472136 = tf(freq=20.0), with freq of:
              20.0 = termFreq=20.0
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.046875 = fieldNorm(doc=2655)
      0.037440285 = weight(_text_:22 in 2655) [ClassicSimilarity], result of:
        0.037440285 = score(doc=2655,freq=2.0), product of:
          0.16128273 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046056706 = queryNorm
          0.23214069 = fieldWeight in 2655, 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=2655)
  0.5 = coord(1/2)
    Abstract
    The term "facet" was introduced into the field of library classification systems by Ranganathan in the 1930's [Ranganathan, 1962]. A facet is a viewpoint or aspect. In contrast to traditional classification systems, faceted systems are modular in that a domain is analyzed in terms of baseline facets which are then synthesized. In this paper, the term "facet" is used in a broader meaning. Facets can describe different aspects on the same level of abstraction or the same aspect on different levels of abstraction. The notion of facets is related to database views, multicontexts and conceptual scaling in formal concept analysis [Ganter and Wille, 1999], polymorphism in object-oriented design, aspect-oriented programming, views and contexts in description logic and semantic networks. This paper presents a definition of facets in terms of faceted knowledge representation that incorporates the traditional narrower notion of facets and potentially facilitates translation between different knowledge representation formalisms. A goal of this approach is a modular, machine-aided knowledge base design mechanism. A possible application is faceted thesaurus construction for information retrieval and data mining. Reasoning complexity depends on the size of the modules (facets). A more general analysis of complexity will be left for future research.
    Date
    22. 1.2016 17:30:31
    Type
    a
  6. Information als Rohstoff für Innovation : Programm der Bundesregierung 1996-2000 (1996) 0.02 
    0.02496019 = product of:
  0.04992038 = sum of:
    0.04992038 = product of:
      0.09984076 = sum of:
        0.09984076 = weight(_text_:22 in 5449) [ClassicSimilarity], result of:
          0.09984076 = score(doc=5449,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.61904186 = fieldWeight in 5449, 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=5449)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 2.1997 19:26:34
  7. Ask me[@sk.me]: your global information guide : der Wegweiser durch die Informationswelten (1996) 0.02 
    0.02496019 = product of:
  0.04992038 = sum of:
    0.04992038 = product of:
      0.09984076 = sum of:
        0.09984076 = weight(_text_:22 in 5837) [ClassicSimilarity], result of:
          0.09984076 = score(doc=5837,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.61904186 = fieldWeight in 5837, 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=5837)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    30.11.1996 13:22:37
  8. Kosmos Weltatlas 2000 : Der Kompass für das 21. Jahrhundert. Inklusive Welt-Routenplaner (1999) 0.02 
    0.02496019 = product of:
  0.04992038 = sum of:
    0.04992038 = product of:
      0.09984076 = sum of:
        0.09984076 = weight(_text_:22 in 4085) [ClassicSimilarity], result of:
          0.09984076 = score(doc=4085,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.61904186 = fieldWeight in 4085, 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=4085)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    7.11.1999 18:22:39
  9. Vögel unserer Heimat (1999) 0.02 
    0.021840166 = product of:
  0.043680333 = sum of:
    0.043680333 = product of:
      0.087360665 = sum of:
        0.087360665 = weight(_text_:22 in 4084) [ClassicSimilarity], result of:
          0.087360665 = score(doc=4084,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.5416616 = fieldWeight in 4084, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=4084)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    7.11.1999 18:22:54
  10. Stocker, G.; Bruck, P.A.: Öffentliche Bibliotheken im Informationszeitalter : Ergebnisse des Forschungsprojekts: Die Digitale Bibliothek (1996) 0.02 
    0.020749755 = product of:
  0.04149951 = sum of:
    0.04149951 = sum of:
      0.0040592253 = weight(_text_:a in 6478) [ClassicSimilarity], result of:
        0.0040592253 = score(doc=6478,freq=2.0), product of:
          0.053105544 = queryWeight, product of:
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.046056706 = queryNorm
          0.07643694 = fieldWeight in 6478, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.153047 = idf(docFreq=37942, maxDocs=44218)
            0.046875 = fieldNorm(doc=6478)
      0.037440285 = weight(_text_:22 in 6478) [ClassicSimilarity], result of:
        0.037440285 = score(doc=6478,freq=2.0), product of:
          0.16128273 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046056706 = queryNorm
          0.23214069 = fieldWeight in 6478, 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=6478)
  0.5 = coord(1/2)
    Date
    16. 8.2001 18:03:22
    Location
    A
  11. Strobel, S.: ¬The complete Linux kit : fully configured LINUX system kernel (1997) 0.02 
    0.018720143 = product of:
  0.037440285 = sum of:
    0.037440285 = product of:
      0.07488057 = sum of:
        0.07488057 = weight(_text_:22 in 8959) [ClassicSimilarity], result of:
          0.07488057 = score(doc=8959,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.46428138 = fieldWeight in 8959, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=8959)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    16. 7.2002 20:22:55
  12. Brinkman's cumulative catalogue on CD-ROM (1996-) 0.02 
    0.01560012 = product of:
  0.03120024 = sum of:
    0.03120024 = product of:
      0.06240048 = sum of:
        0.06240048 = weight(_text_:22 in 6474) [ClassicSimilarity], result of:
          0.06240048 = score(doc=6474,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.38690117 = fieldWeight in 6474, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=6474)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    16. 2.1997 16:22:51
  13. Jahrbuch der Auktionspreise für Bücher, Handschriften und Autographen : Ergebnisse der Auktionen in Deutschland, den Niederlanden, Österreich und der Schweiz. Mit einem Anhang: Spezialgebiete der Antiquariate (1992) 0.02 
    0.01560012 = product of:
  0.03120024 = sum of:
    0.03120024 = product of:
      0.06240048 = sum of:
        0.06240048 = weight(_text_:22 in 2966) [ClassicSimilarity], result of:
          0.06240048 = score(doc=2966,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.38690117 = fieldWeight in 2966, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=2966)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    13. 3.1996 21:22:40
  14. Jahrbuch der Auktionspreise für Bücher, Handschriften und Autographen (JAP) : Computerdatei (1997) 0.02 
    0.01560012 = product of:
  0.03120024 = sum of:
    0.03120024 = product of:
      0.06240048 = sum of:
        0.06240048 = weight(_text_:22 in 2967) [ClassicSimilarity], result of:
          0.06240048 = score(doc=2967,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.38690117 = fieldWeight in 2967, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=2967)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    13. 3.1996 21:22:40
  15. Lusti, M.: Data Warehousing and Data Mining : Eine Einführung in entscheidungsunterstützende Systeme (1999) 0.01 
    0.012480095 = product of:
  0.02496019 = sum of:
    0.02496019 = product of:
      0.04992038 = sum of:
        0.04992038 = weight(_text_:22 in 4261) [ClassicSimilarity], result of:
          0.04992038 = score(doc=4261,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.30952093 = fieldWeight in 4261, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=4261)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    17. 7.2002 19:22:06
  16. Gehirn, Gedächtnis, neuronale Netze (1996) 0.01 
    0.010920083 = product of:
  0.021840166 = sum of:
    0.021840166 = product of:
      0.043680333 = sum of:
        0.043680333 = weight(_text_:22 in 4661) [ClassicSimilarity], result of:
          0.043680333 = score(doc=4661,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.2708308 = fieldWeight in 4661, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4661)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2000 18:45:51
  17. Deutsche Nationalbibliographie : CD-ROM 1972-1985 (1997) 0.01 
    0.010920083 = product of:
  0.021840166 = sum of:
    0.021840166 = product of:
      0.043680333 = sum of:
        0.043680333 = weight(_text_:22 in 4748) [ClassicSimilarity], result of:
          0.043680333 = score(doc=4748,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.2708308 = fieldWeight in 4748, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4748)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    7. 5.2000 10:38:22
  18. Place, E.: Internationale Zusammenarbeit bei Internet Subject Gateways (1999) 0.01 
    0.009360071 = product of:
  0.018720143 = sum of:
    0.018720143 = product of:
      0.037440285 = sum of:
        0.037440285 = weight(_text_:22 in 4189) [ClassicSimilarity], result of:
          0.037440285 = score(doc=4189,freq=2.0), product of:
            0.16128273 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046056706 = queryNorm
            0.23214069 = fieldWeight in 4189, 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=4189)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 6.2002 19:35:09
  19. Page, A.: ¬The search is over : the search-engines secrets of the pros (1996) 0.00 
    0.0037819599 = product of:
  0.0075639198 = sum of:
    0.0075639198 = product of:
      0.0151278395 = sum of:
        0.0151278395 = weight(_text_:a in 5670) [ClassicSimilarity], result of:
          0.0151278395 = score(doc=5670,freq=10.0), product of:
            0.053105544 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.046056706 = queryNorm
            0.28486365 = fieldWeight in 5670, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.078125 = fieldNorm(doc=5670)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Covers 8 of the most popular search engines. Gives a summary of each and has a nice table of features that also briefly lists the pros and cons. Includes a short explanation of Boolean operators too
    Type
    a
  20. Swartout, B.; Patil, R.; Knight, K.; Russ, T.: Toward Distributed Use of Large-Scale Ontologies (1996) 0.00 
    0.003515392 = product of:
  0.007030784 = sum of:
    0.007030784 = product of:
      0.014061568 = sum of:
        0.014061568 = weight(_text_:a in 4961) [ClassicSimilarity], result of:
          0.014061568 = score(doc=4961,freq=24.0), product of:
            0.053105544 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.046056706 = queryNorm
            0.26478532 = fieldWeight in 4961, product of:
              4.8989797 = tf(freq=24.0), with freq of:
                24.0 = termFreq=24.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.046875 = fieldNorm(doc=4961)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Large scale knowledge bases systems are difficult and expensive to construct. If we could share knowledge across systems, costs would be reduced. However, because knowledge bases are typically constructed from scratch, each with their own idiosyncratic structure, sharing is difficult. Recent research has focused on the use of ontologies to promote sharing. An ontology is a hierarchically structured set of terms for describing a domain that can be used as a skeletal foundation for a knowledge base. If two knowledge bases are built on a common ontology, knowledge can be more readily shared, since they share a common underlying structure. This paper outlines a set of desiderata for ontologies, and then describes how we have used a large-scale (50,000+ concept) ontology to develop a specialized, domain-specific ontology semi-automatically. We then discuss the relation between ontologies and the process of developing a system, arguing that to be useful, an ontology needs to be created as a "living document", whose development is tightly integrated with the system's. We conclude with a discussion of Web-based ontology tools we are developing to support this approach

Authors

Languages

  • e 103
  • d 38
  • m 1
  • nl 1
  • More… Less…

Types

  • a 53
  • i 21
  • m 3
  • r 3
  • b 2
  • s 2
  • n 1
  • x 1
  • More… Less…

Themes

Subjects

Classifications