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Wellisch, H.H.: Year's work in subject analysis : 1980 (1981)
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Wellisch, H.H.: Indexing: a basic reading list (1992)
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Wellisch, H.H.: ¬The literature of indexing (1989)
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Wellisch, H.H.: Organisatorische Neuordnung des DK-Systems (1971)
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Wellisch, H.H.: UDC: present and potential (1974)
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Gorman, G.E.; Mills, J.J.: Guide to current indexing and abstracting services in the third world (1992)
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Lancaster, F.W.: Trends in subject indexing from 1957 to 2000 (1980)
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Bertrand, A.; Cellier, J.-M.: Psychological approach to indexing : effects of the operator's expertise upon indexing behaviour (1995)
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Humphrey, S.M.: Indexing biomedical documents : from thesaural to knowledge-based retrieval systems (1992)
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Wellisch, H.H.: Book and periodical indexing (1994)
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