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Butschart, I.C.; Fothergill, R.: Non-book materials in libraries : a practical guide (1990)
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Davison, P.: ¬The book encompassed : studies in the twentieth-century bibliography (1992)
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Fidel, R.: Writing abstracts for free-text searching (1986)
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Friis-Hansen, J.B.: Subject retrieval in Denmark, 1975-1985 : a survey (1985)
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Sweeney, R.: ¬The international use of the Dewey Decimal Classification (1995)
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