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  • × year_i:[1970 TO 1980}
  • × theme_ss:"Geschichte der Klassifikationssysteme"
  1. Kedrov, B. M.: Klassifizierung der Wissenschaften (1975-75) 0.03 
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    Isbn
    3-7609-0200-6 (T.1) * 3-7609-0224-3 (T.2)
  2. Wellisch, H.H.: Organisatorische Neuordnung des DK-Systems (1971) 0.02 
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    Source
    Nachrichten für Dokumentation. 22(1971), S.55-63

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