By Andrew S. Tanenbaum

Published on 0

By R.O.C. Norman & D.J.Waddington

Published by English Language book society/John wiley, 1986

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Published by John wiley and sons, 1983

By Robert L Sproul

Published by Sang e meel publications, 1986

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Published by John Willey and Sons Inc., 1996

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Published by Khanna Publishers, 1986

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Published by M.r.Brothers, 0

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Published by Wiley Eastern Ltd, 1988

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Published by Sang-e-Meel Publications, 2011

By Muhammad Sohail Bhatti

Published by Bhatti sons publishers, 2003