
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.: Organisatorische Neuordnung des DKSystems (1971)
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Wellisch, H.H.: UDC: present and potential (1974)
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Wellisch, H.H.: ¬The cybernetics of bibliographic control : toward a theory of document retrieval systems (1980)
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Rentschler, C.: Indexing electronic journals (1998)
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Kaskus, M.A.: Indexing in theory and practice (1996)
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Tennis, J.: Three creative tensions in document interpretation theory set as evidence of the need for a descriptive informatics (2009)
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Wu, Y.: Indexing historical, political cartoons for retrieval (2013)
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Guidi, F.; Sacerdoti Coen, C.: ¬A survey on retrieval of mathematical knowledge (2015)
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