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Schabas, A.H.: ¬A comparative evaluation of the retrieval effectiveness of titles, Library of Congress Subject Headings and PRECIS strings for computer searching of UK MARC data (1979)
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Drabenstott, K.M.; Vizine-Goetz, D.: Using subject headings for online retrieval : theory, practice and potential (1994)
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Voorbij, H.: ¬Een goede titel behoeft geen trefwoord, of toch wel? : een vergelijkend oderzoek titelwoorden - trefwoorden (1997)
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