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Wimmer, F.: ¬Die internationale Dezimalklassifikation : Betrachtungen zu ihrer Entstehungsgeschichte und Aktualität (1985)
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Dahlberg, I.: Major developments in classification (1977)
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McIlwaine, I.C.: ¬The Universal Decimal Classification : some factors concerning its origins, development, and influence (1997)
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Hopwood, H.V.: Dewey expanded (1985)
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Salah, A.A.; Gao, C.; Suchecki, K.; Scharnhorst, A.; Smiraglia, R.P.: ¬The evolution of classification systems : ontogeny of the UDC (2012)
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