000 00314nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c525
040 _aET
100 _aJain & Jain
245 0 _aEngineering Chemistry
260 _bDhanpat Rai
_aNEW DELHI
300 _a1404
500 _a50065
942 _cBK
999 _c56080
_d56080