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  • × year_i:[1980 TO 1990}
  • × language_ss:"nl"
  1. Regt, W. F. de; Wijn, J. H. de: Handleiding UDC. Zoekgebieden, constructie, gebruik. Voor de Nederlandse Stichting von Classificatie en andere Ontsluitingsmethoden (NCS) uitgegeven door muusses-purmerend (1981) 0.01 
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  2. Plaister, J.: PICA : Centrum voor Bibliotheekautomatisering (1987) 0.01 
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