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classification_ss:"SR 990"
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Information : keywords (2021)
8.57
8.565973 = weight(ddc_ss:020 in 1625) [ClassicSimilarity], result of: 8.565973 = fieldWeight in 1625, product of: 1.0 = tf(freq=1.0), with freq of: 1.0 = termFreq=1.0 8.565973 = idf(docFreq=22, maxDocs=44421) 1.0 = fieldNorm(doc=1625)
- Classification
- 020
- Ddc
- 020
- DDC
- 020