000 00242nam a2200109Ia 4500
008 211126s9999 xx 000 0 und d
082 _a660.1
100 _aP.C.JAIN
245 0 _aENGINEERING CHEMISRTY
260 _bCHAROTAR
942 _cBTECH
999 _c163749
_d163749