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Smith, M.J.; Cochrane, P.A.: Creating better subject access with multiple vocabularies : upgrading the Subject Heading List for the Alzheimer's Association (1999)
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Holley, R.P.; Killheffer, R.E.: Is there an answer to the subject access crisis? (1981)
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Chowdhury, G.: ¬An agenda for green information retrieval research (2012)
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Chowdhury, G.: Building environmentally sustainable information services : a green is research agenda (2012)
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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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