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Basch, R.: ProQuest Direct : document delivery [with images] to the desktop (1996)
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UMI's ProQuest Direct now available on World Wide Web (1996)
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Bartenbach, B.: Compendex Plus (1995)
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Kluegal, K.: Dissertation Abstracts OnDisc : a review (1992)
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Machovec, G.S.: Electronic journal market overview in 1997 : part 2 - the aggregators (1997)
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