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Needleman, M.H.: Z39.50: new doors opening (1992)
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Hauffe, H.: ¬Ein OPAC-Konzept für die wissenschaftlichen Bibliotheken Österreichs (1988)
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Ashton, J.: Development of the British Library's OPAC 97 : the value of a user-centred approach (1998)
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Crawford, W.: Developing Eureka : rapid access to very large databases (1996)
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Wood, A.J.: OPACs in public libraries : a second look (1989)
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