Simon, H.-R.; Ockenfeld, M.: ¬Die Entwicklung von Chemical Abstracts 1907 bis 1980 (1981)
0.03
0.025042705 = product of:
0.075128116 = sum of:
0.075128116 = product of:
0.15025623 = sum of:
0.15025623 = weight(_text_:bibliothek in 6180) [ClassicSimilarity], result of:
0.15025623 = score(doc=6180,freq=2.0), product of:
0.20703235 = queryWeight, product of:
4.1055303 = idf(docFreq=1980, maxDocs=44218)
0.050427675 = queryNorm
0.72576207 = fieldWeight in 6180, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1055303 = idf(docFreq=1980, maxDocs=44218)
0.125 = fieldNorm(doc=6180)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Bibliothek: Forschung und Praxis. 5(1981) H.2, S.143-152