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020 _a81-7381-583-6
082 _a660 R263
100 _aRAY,B.C
245 0 _aENGINEERING CHEMISTRY
260 _aKOLKATA
_bNEW CENTRAL BOOOK AGENCY
_c2008
300 _aix+221p.,24x18Cms
942 _cBK
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999 _c43474
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