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DIN 31623: Indexierung zur inhaltlichen Erschließung von Dokumenten : T.1: Begriffe, Grundlagen; T.2: Gleichordnende Indexierung mit Deskriptoren; T.3: Syntaktische Indexierung mit Deskriptoren (1988) 0.04

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Winograd, T.: Software für Sprachverarbeitung (1984) 0.02

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Mooers, C.N.: ¬The indexing language of an information retrieval system (1985) 0.01

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Footnote: Original in: Information retrieval today: papers presented at an Institute conducted by the Library School and the Center for Continuation Study, University of Minnesota, Sept. 19-22, 1962. Ed. by Wesley Simonton. Minneapolis, Minn.: The Center, 1963. S.21-36.

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