Search (2 results, page 1 of 1)

  • × author_ss:"Purcell, R."
  • × year_i:[1980 TO 1990}
  1. Purcell, R.: Computers and reference service (1989) 0.02 
    0.01931966 = product of:
  0.03863932 = sum of:
    0.03863932 = product of:
      0.07727864 = sum of:
        0.07727864 = weight(_text_:r in 1054) [ClassicSimilarity], result of:
          0.07727864 = score(doc=1054,freq=2.0), product of:
            0.15092614 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.045593463 = queryNorm
            0.51202947 = fieldWeight in 1054, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.109375 = fieldNorm(doc=1054)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  2. Purcell, R.: User orientation for the Electronic Encyclopedia (1989) 0.01 
    0.013799756 = product of:
  0.027599512 = sum of:
    0.027599512 = product of:
      0.055199023 = sum of:
        0.055199023 = weight(_text_:r in 2527) [ClassicSimilarity], result of:
          0.055199023 = score(doc=2527,freq=2.0), product of:
            0.15092614 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.045593463 = queryNorm
            0.36573532 = fieldWeight in 2527, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.078125 = fieldNorm(doc=2527)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Themes