Butschart, I.C.; Fothergill, R.: Non-book materials in libraries : a practical guide (1990)
0.01
0.0061497777 = product of:
0.012299555 = sum of:
0.012299555 = product of:
0.02459911 = sum of:
0.02459911 = weight(_text_:r in 1709) [ClassicSimilarity], result of:
0.02459911 = score(doc=1709,freq=2.0), product of:
0.13451865 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.040636905 = queryNorm
0.18286766 = fieldWeight in 1709, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.0390625 = fieldNorm(doc=1709)
0.5 = coord(1/2)
0.5 = coord(1/2)
