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Gödert, W.: ¬Die Dezimalklassifikation im Online-Retrieval (1990)
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Funk, H.; Loth, K.: Sachabfrage im ETHICS auf der Basis der UDK: ein OPAC (1988)
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Maibach, C.: ¬Die DDC auf neuen Wegen : verbale Sucheinstiege für klassifikatorisch erschlossene Titel (2014)
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