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Travis, I.: Faceted classification in an online environment (1982)
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Hermes, H.-J.; Bischoff, M.: ¬Die Dezimaklassifikation (DK) in Datenbanken (1989)
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Funk, H.; Loth, K.: Sachabfrage im ETHICS auf der Basis der UDK: ein OPAC (1988)
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Markey, K.; Demeyer, A.N.: Dewey Decimal Classification online project: evaluation of a library schedule and index integrated into the subject searching capabilities of an online catalog : final report to the Council of Library Resources (1986)
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Chan, L.M.: Library of Congress class numbers in online catalog searching (1989)
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Oberhauser, O.: Klassifikation in Online-Informationssystemen (1986)
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Williamson, N.J.: ¬The Library of Congress Classification in the computer age (1989)
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