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  • × author_ss:"Helbig, G."
  • × year_i:[1980 TO 1990}
  1. Helbig, G.: Zuordnungen und Abgrenzungen der Sachgebiete bei den naturwissenschaftlich-technischen Hauptgruppen im Rahmen der zentralen Adaption der BBK (1984) 0.03 
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    Source
    Probleme der Adaption der Bibliothekarisch-Bibliographischen Klassifikation. Kolloquium in der Universitätsbibliothek der Humboldt-Universität zu Berlin am 8. u. 9. September 19983. Endred.: J. Krueger
  2. Fröschner, G.; Helbig, G.; Schulz, H.: Richtlinie für die Adaption der sowjetischen Bibliothekarisch-bibliographischen Klassifikation (1981) 0.02 
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