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classification_ss:"AN 94500"
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Unesco thesaurus : a structured list of descriptors for indexing and retrieving literature in the fields of education, science, social science, culture and communication (1977)
9.06
9.06241 = weight(lcsh_ss:Subject headings in 424) [ClassicSimilarity], result of: 9.06241 = fieldWeight in 424, product of: 1.0 = tf(freq=1.0), with freq of: 1.0 = termFreq=1.0 9.06241 = idf(docFreq=13, maxDocs=44421) 1.0 = fieldNorm(doc=424)
- Lcsh
- Subject headings
- Subject
- Subject headings