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Emerald Group Publishing Ltd‎(2001)‎

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By Uhegbu A.N.   Nwokocha U.   in International Information & Library Review

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Elsevier‎(1998)‎

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By Uhegbu A.N.   Okereke C.I.   in Library Review

ISSN:0024-2535|55|1|35-44

Emerald Group Publishing Ltd‎(2006)‎

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