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  • × subject_ss:"Sozialwissenschaften / Thesaurus"
  • × theme_ss:"Thesauri"
  • × year_i:[1970 TO 1980}
  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) 0.00 
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    Language
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