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  • × author_ss:"Frei, H.P."
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  • × year_i:[1990 TO 2000}
  1. Qiu, Y.; Frei, H.P.: Concept based query expansion (1993) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval