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Hoerman, H.L.; Furniss, K.A.: Turning practice into principles : a comparison of the IFLA Principles underlying Subject Heading Languages (SHLs) and the principles underlying the Library of Congress Subject Headings system (2000)
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Studwell, W.E.: Subject suggestions 7 : some concerns relating to the social sciences (1990)
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Thorin, S.E.: ¬The National Digital Library : digitization of the Library of Congress (1995)
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Taylor, A.G.; Joudrey, D.N.: On teaching subject cataloging (2002)
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Holley, R.P.; Killheffer, R.E.: Is there an answer to the subject access crisis? (1981)
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