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classification_ss:"025.4/9 / dc19"
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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)
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- Content
- v. 1. Introduction, classified thesaurus, permuted index, hierarchical display.--v. 2. Alphabetical thesaurus.
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Lancaster, F.W.: Vocabulary control for information retrieval (1986)
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- Date
- 22. 4.2007 10:07:51