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Supper, R.: PRECIS, ein computerunterstütztes alphabetisches Indexierungssystem (1975)
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Butcher, J.E.; Trotter, R.: Building on PRECIS : strategies for online subject access in the British Library (1989)
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Peters, H.J.: User reactions to PRECIS indexes (1981)
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Kuhlen, R.: Linguistische Grundlagen (1980)
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Supper, R.: Entwicklung und Grundprinzipien von PRECIS, einem computergestütztem Indexierungssystem (1985)
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Matter, R.: PRECIS als zwischensprachliches System (1979)
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