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  • × classification_ss:"025.4/9 / dc19"
  • × language_ss:"e"
  1. Unesco thesaurus : a structured list of descriptors for indexing and retrieving literature in the fields of education, science, social science, culture and communication (1977) 0.01 
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    Editor
    Aitchison, J.
  2. Lancaster, F.W.: Vocabulary control for information retrieval (1986) 0.01 
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    Date
    22. 4.2007 10:07:51

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