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  • × author_ss:"DeVere, R."
  • × type_ss:"r"
  • × author_ss:"Walker, S."
  • × theme_ss:"OPAC"
  1. Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990) 1.00
    1.0 = *:*, product of:
      1.0 = boost
      1.0 = queryNorm