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Hildreth, C.R.: Online Public Access Catalogs (1985)
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Hildreth, C.: To Boolean or not to Boolean? (1983)
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Hildreth, C.R.: Intelligent interfaces and retrieval methods for subject searching in bibliographic retrieval systems (1989)
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Wepsiec, J.: Library of Congress Subject Headings pertaining to society (1982)
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Zalokar, M.: Preparation of a general controlled vocabulary in Slovene and English for the COBISS.SI library information system, Slovenia (2004)
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