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Dailey, J.E.: Subject headings (1980)
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Mikacic, M.: Statistical system for subject designation (SSSD) for libraries in Croatia (1996)
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Russell, M.A.: Inconsistencies in subject headings in young adult resources (1991)
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Crawford, L.: People, places & things introduced (2001)
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Mischo, W.H.: Library of Congress Subject Headings : a review of the problems, and prospects for improved subject access (1981)
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