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Olsen, N.B.: Cataloging microcomputer software (1988)
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Olsen, J.: Electronic journals : implications for scholars (1994)
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Olsen, A.N.: Hyllesignaturer og ISBN for det virtuelle bibliotek (1996)
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Olsen, K.A.: ¬The Internet, the Web, and eBusiness : formalizing applications for the real world (2005)
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Ensor, P.: Knowledge level of users and nonusers of keyword/Boolean searching on an online public access catalog (1992)
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Hirsh, S.G.; Borgman, C.L.: Comparing children's use of browsing and keyword searching on the Science Library catalog (1995)
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Pienaar, R.E.: Enhancement of subject access in online public access catalogues (OPACs) (1989)
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