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  • × author_ss:"Werf-Davelaar, T.v.d."
  • × language_ss:"nl"
  1. Werf-Davelaar, T.v.d.: ¬De bibliografische beschrijving van elektronische informatiebronnen : 2 (1997) 0.01 
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  2. Werf-Davelaar, T.v.d.: ¬De bibliografische beschrijving van elektronische informatiebronnen : de ontwikkeling van ISBD(ER) (1997) 0.01 
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