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Noble, R.: Document delivery and full text from OCLC (1996)
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FirstSearch upgrade provides online access to documents (1995)
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O'Leary, M.: ProQuest direct delivers UMI goods (1996)
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Machovec, G.S.: Electronic journal market overview in 1997 : part 2 - the aggregators (1997)
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Boyett, S.: FirstSearch in public libraries (1994)
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