Robinson, J.: Education and training for computer based reference services : a case study (1980)
0.01
0.014809451 = product of:
0.11847561 = sum of:
0.11847561 = weight(_text_:case in 840) [ClassicSimilarity], result of:
0.11847561 = score(doc=840,freq=2.0), product of:
0.1742197 = queryWeight, product of:
4.3964143 = idf(docFreq=1480, maxDocs=44218)
0.03962768 = queryNorm
0.68003565 = fieldWeight in 840, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.3964143 = idf(docFreq=1480, maxDocs=44218)
0.109375 = fieldNorm(doc=840)
0.125 = coord(1/8)