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PRECIS: Für die Anwendung in deutschen Bibliotheken überarbeitete u. vereinfachte Form des syntaktischen Indexierungsverfahrens der British Library (1984)
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Richmond, P.A.: Introduction to PRECIS for North American usage (1981)
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Ramsden, M.J.: PRECIS: a workbook for students of librarianship (1981)
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Dykstra, M.: PRECIS: a primer (1985)
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Austin, D.: PRECIS: a manual of concept analysis and subject indexing (1984)
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