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Poo, D.C.C.; Khoo, C.: Subject searching in online catalog systems (1997)
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Khoo, C.S.G.; Poo, D.C.C.: ¬An expert system approach to online catalog subject searching (1994)
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- Information processing and management. 30(1994) no.2, S.223-238
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Poo, D.C.C.; Khoo, C.S.G.: Online Catalog Subject Searching (2009)
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