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Butcher, R.: Multi-lingual OPAC development in the British Library (1993)
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Butcher, R.: New OPAC for BL (1993)
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Trotter, R.: Electronic Dewey : the CD-ROM version of the Dewey Decimal Classification (1995)
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Butcher, H.: Why don't managers use information? (1997)
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Trotter, R.: Dewey 21 : a personal view (1997)
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Bakewell, K.G.B.: Indexers' reactions to PRECIS (1979)
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Austin, D.; Digger, J.A.: PRECIS: The Preserved Context Index System (1985)
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Matter, R.: PRECIS als zwischensprachliches System (1979)
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Detemple, S.: PRECIS : ein computerunterstütztes System zur Herstellung alphabetischer Sachregister und Schlagwortkataloge (1982)
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Lambert, G.: PRECIS in a multilingual context : Pt.4: The application of PRECIS in French. (1976)
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