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  • × type_ss:"m"
  • × year_i:[1930 TO 1940}
  1. Vorstius, J.: ¬Die Katalogprobleme im Spiegel der ausländischen Fachliteratur seit 1930 (1933) 0.01 
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  2. Otlet, P.: Traité de documentation : le livre sur le livre - théorie et pratique (1934) 0.01 
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