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  1. Lancaster, F.W.: Vocabulary control for information retrieval (1986) 0.13 
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    Date
    22. 4.2007 10:07:51
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  2. Townley, H.M.; Gee, R.G.: Thesaurus-making : grow your own wordstock (1980) 0.09 
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  3. Unesco thesaurus : a structured list of descriptors for indexing and retrieving literature in the fields of education, science, social science, culture and communication (1977) 0.06 
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