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1Academic Journal
المؤلفون: Kupferberg N (AUTHOR), Hartel LJ (AUTHOR)
المصدر: Journal of the Medical Library Association. Jan2004, Vol. 92 Issue 1, p66-71. 6p.
URL: 12032819
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2Academic Journal
المصدر: Medical Reference Services Quarterly; 2002, Vol. 21 Issue 1, p35-52, 18p