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Poo, D.C.C.; Khoo, C.S.G.: Online Catalog Subject Searching (2009)
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Troutman, L.: ¬The online public access catalog and music materials : issues for system and interface design (1992)
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Piccotti, P.: ¬Les nouvelles technologies et la recherche documentaire (1998)
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Oshiro, Z.; Kaji, K.: ¬A survey of Japanese Internet OPACs (1997)
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Pienaar, R.E.: Enhancement of subject access in online public access catalogues (OPACs) (1989)
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