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Trinkhaus, M.: Möglichkeiten und Aspekte des sachlichen Zugriffs in Online-Katalogen (1990)
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- Bibliothek. Forschung und Praxis. 14(1990), S.193-225
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Aluri, R.D.; Kemp, A.; Boll, J.J.: Subject analysis in online catalogs (1991)
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- Information retrieval
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- Information retrieval
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Poynder, R.: Web research engines? (1996)
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- Information world review. 1996, no.120, S.47-48
