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Hoffmann, L.; Schmidt, R.M.: ¬The cataloging of electronic serials in the union catalog of the North-Rhine Westphalian library network (1999)
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Schmidt, R.M.: Integration of microcomputers into a mainframe based library system (1990)
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Schmidt, R.M.: Libraries, bibliographic utilities and library networks : looking ahead (1996)
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Schmidt, R.M.: Online public access catalogs serving users in an electronic library environment (1993)
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