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Dailey, J.E.: Subject headings (1980)
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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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Greenberg, A.M.: Scope notes in Library of Congress Subject Headings (1981)
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Lu, S.-j.: ¬A study on Chinese subject headings (1997)
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