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Proceedings of first seminar on UDC in a mechanized retrieval system conducted by R.R. Freeman and Pauline Atherton, Cph., 2th-6th September, 1968

R. R. Freeman

出版	Danish Centre for Documentation, 1969
URL	http://books.google.com.hk/books?id=0lThcQAACAAJ&hl=&source=gbs_api