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Ansteinsson, J.: ¬The subject catalog in Germanic countries (1933)
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- Theme
- Geschichte der Sacherschließung
Geschichte der Kataloge
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Ansteinsson, J.: Dilemmas of classification (1934)
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- Theme
- Geschichte der Klassifikationssysteme
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Brown, J.D.; Stewart, J.D.: Subject classification (1939)
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- Theme
- Geschichte der Klassifikationssysteme
