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Supper, R.: PRECIS, ein computerunterstütztes alphabetisches Indexierungssystem (1975) 0.00

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Theme: Preserved Context Index System (PRECIS)

Supper, R.: Entwicklung und Grundprinzipien von PRECIS, einem computergestütztem Indexierungssystem (1985) 0.00

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Theme: Preserved Context Index System (PRECIS)

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