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  • × theme_ss:"Klassifikationssysteme im Online-Retrieval"
  • × year_i:[1970 TO 1980}
  1. Rolland-Thomas, P.: ¬The role of classification in subject retrieval in the future (1976) 0.02 
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  2. Sydler, J.-P.: UDC-Automatisierung und ihre Folgerungen (1978) 0.01 
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