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Medical Subject Headings : annotated alphabetic list (1993)
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Browne, G.: Scope notes for LISA subject headings (1992)
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Dailey, J.E.: Subject headings (1980)
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El-Hoshy, L.M.: Relationships in Library of Congress Subject Headings (2001)
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Connell, T.H.: Use of the LCSH system : realities (1996)
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