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  • × author_ss:"Robertson, S.E."
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  • × year_i:[1980 TO 1990}
  1. Robertson, S.E.: On relevance weight estimation and query expansion (1986) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval