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  • × author_ss:"Duncan, E.B."
  • × theme_ss:"Klassifikationssysteme im Online-Retrieval"
  • × language_ss:"e"
  • × year_i:[1990 TO 2000}
  1. Duncan, E.B.: ¬A concept-map thesaurus as a knowledge-based hypertext interface to a bibliographic database (1990) 1.00
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