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Subject retrieval in the seventies: new directions : Proc. of an Int. Symp. ... College Park, 14.-15.5.1971 (1972)
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Reynolds, D.J.: ¬The introduction and use of forms of decimal classification in Russia, 1895-1921 : UDC, DDC, and the normal plan (1977)
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Wellisch, H.H.: UDC: present and potential (1974)
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Lloyd, G.A.: ¬The Universal Decimal Classification as an international switching language (1972)
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¬The UDC in mechanized subject information retrieval (1972)
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Lloyd, G.A.: Universal Decimal Classification (1976)
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Dahlberg, I.: Major developments in classification (1977)
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Bhattacharyya, G.: Classifying by UDC and CC: a comparative study (1972)
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Proceedings of second seminar on UDC in a mechanized retrieval system, conducted by R.R. Freeman, Frankfurt, 1.-5.6.1970. (1971)
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Schmidt, A.F.; Wijn, J.H. de: Some possibilities for a new 'reformed' UDC (1972)
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Scibor, E.: Some remarks on the future desired development of UDC from the viewpoint of mechanized information retrieval (1971)
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Classification in the 1970s. A second look (1976)
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Major classification systems: the Dewey centennial : papers presented at the Allerton Park Institute, 9.-12.11.1975 (1976)
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Wellisch, H.H.: ¬The Universal Decimal Classification : a programmed instruction course (1970)
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General Classification Systems in a changing world : Proceedings of the FID Classification Symposium held in commemoration of the Dewey centenary, Brussels, Nov. 1976 (1978)
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Key to information. Universal Decimal Classification (1970)
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Foskett, A.C.: ¬The Universal Decimal Classification : the history, present status and future prospects of a large general classification system (1973)
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UDC in relation to other indexing languages : Proceedings of the International Symposium held in Herceg Novi, Yugoslavia, 28.6.-1.7.1971 (1975)
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Robinson, G.: Universal Decimal Classification : a brief introduction (1979)
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Neelameghan, A.: ¬A theoretical foundation for UDC : its need and formulation (1975)
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