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020 _a0-07-059952-1
082 _b6140
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100 _aASHRAF M ASHRAF;
245 _aEFFECTIVE TECHNICAL COMMUNICATION:
260 _bTATA MC-GRAW HILL PUBLISHING COMPANY LTD
_aNEW DELHI
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300 _a544
530 _a437
653 _aCOMMUNICAION
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952 _w2011-03-11
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