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Al-Hawamdeh, Suliman, author
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Buku Teks
T. Kanti Srikantaiah, Michael E.D. Koenig, editor
Information Today, 2000
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Albrecht, Leon K., author
Macmillan, 1973
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Miltiadis Lytras, John M. Carroll, Ernesto Damiani, Robert D. Tennyson
Springer-Verlag , 2008
Buku Teks