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  • × author_ss:"Brakel, P.A. van"
  • × theme_ss:"Retrievalstudien"
  • × year_i:[1990 TO 2000}
  1. Van der Walt, H.E.A.; Brakel, P.A. van: Method for the evaluation of the retrieval effectiveness of a CD-ROM bibliographic database (1991) 0.00
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