-
Walford's guide to reference material : Vol.1: Science and technology (1999)
0.02
0.022296866 = product of:
0.044593733 = sum of:
0.044593733 = product of:
0.089187466 = sum of:
0.089187466 = weight(_text_:x in 4113) [ClassicSimilarity], result of:
0.089187466 = score(doc=4113,freq=2.0), product of:
0.19116588 = queryWeight, product of:
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.045271195 = queryNorm
0.4665449 = fieldWeight in 4113, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.078125 = fieldNorm(doc=4113)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Isbn
- 1-85604-341-X
-
Reference and information services : an introduction (2001)
0.02
0.017837493 = product of:
0.035674985 = sum of:
0.035674985 = product of:
0.07134997 = sum of:
0.07134997 = weight(_text_:x in 1522) [ClassicSimilarity], result of:
0.07134997 = score(doc=1522,freq=2.0), product of:
0.19116588 = queryWeight, product of:
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.045271195 = queryNorm
0.3732359 = fieldWeight in 1522, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.0625 = fieldNorm(doc=1522)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Isbn
- 1-56308-130-X
-
Reference and information services : an introduction (1995)
0.01
0.008918746 = product of:
0.017837493 = sum of:
0.017837493 = product of:
0.035674985 = sum of:
0.035674985 = weight(_text_:x in 1523) [ClassicSimilarity], result of:
0.035674985 = score(doc=1523,freq=2.0), product of:
0.19116588 = queryWeight, product of:
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.045271195 = queryNorm
0.18661796 = fieldWeight in 1523, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.03125 = fieldNorm(doc=1523)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Isbn
- 1-56308-130-X