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Reiner, U.: Automatische DDC-Klassifizierung von bibliografischen Titeldatensätzen (2009)
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Place, E.: Internationale Zusammenarbeit bei Internet Subject Gateways (1999)
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Day, M.; Koch, T.: ¬The role of classification schemes in Internet resource description and discovery : DESIRE - Development of a European Service for Information on Research and Education. Specification for resource description methods, part 3 (1997)
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