Search (1 results, page 1 of 1)

  • × classification_ss:"025.5'2 / dc20"
  • × language_ss:"e"
  • × year_i:[1990 TO 2000}
  1. Katz, W.A.: Introduction to reference work : Vol.1: Basic information sources; vol.2: Reference services and reference processes (1992) 0.01
    0.007763238 = product of:
      0.015526476 = sum of:
        0.015526476 = product of:
          0.031052953 = sum of:
            0.031052953 = weight(_text_:libraries in 3364) [ClassicSimilarity], result of:
              0.031052953 = score(doc=3364,freq=8.0), product of:
                0.1711139 = queryWeight, product of:
                  3.2850544 = idf(docFreq=4499, maxDocs=44218)
                  0.052088603 = queryNorm
                0.18147534 = fieldWeight in 3364, product of:
                  2.828427 = tf(freq=8.0), with freq of:
                    8.0 = termFreq=8.0
                  3.2850544 = idf(docFreq=4499, maxDocs=44218)
                  0.01953125 = fieldNorm(doc=3364)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    COMPASS
    Libraries / Reference services
    LCSH
    Reference services (Libraries)
    Subject
    Libraries / Reference services
    Reference services (Libraries)