Heide, L.: Punched-card systems and the early information explosion, 1880-1945 (2009)
0.00
0.0015283375 = product of:
0.009170025 = sum of:
0.009170025 = weight(_text_:der in 3345) [ClassicSimilarity], result of:
0.009170025 = score(doc=3345,freq=2.0), product of:
0.09288972 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.04158434 = queryNorm
0.09871948 = fieldWeight in 3345, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.03125 = fieldNorm(doc=3345)
0.16666667 = coord(1/6)
- Theme
- Geschichte der Sacherschließung