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  • × theme_ss:"Retrievalstudien"
  • × type_ss:"a"
  • × year_i:[1970 TO 1980}
  1. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.03 
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    Date
    19. 3.1996 11:22:12