Zenith Data Systems, 1986
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Shapiro, Neil L.
McGraw-Hill, 1983
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Lord, Kenniston W., author
Van Nostrand Reinhold, 1978
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Lange, Heinz, author
Abacus, , 2000
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Sumantri Slamet...[at al.]
Elex Media Komputindo, 1989
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