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Nohr, H.: Tendenzen der OPAC-Entwicklung (1990)
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- Source
- Auskunft. 10(1990), S. -
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Nohr, H.: Zum Sachzugriff über Stichworte in Online-Publikumskatalogen (OPACs) (1991)
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- Source
- Libri. 41(1991), S.165-169