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Poo, D.C.C.; Khoo, C.: Subject searching in online catalog systems (1997)
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Poo, D.C.C.; Khoo, C.S.G.: Online Catalog Subject Searching (2009)
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- Digital unter: http://dx.doi.org/10.1081/E-ELIS3-120008863. Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.
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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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