000 00258nam a2200121Ia 4500
999 _c60357
_d60357
020 _a9789387472778
100 _aPutti R Vijayasarathy
245 _aEngineering Chemistry
250 _a3
260 _c2020
_bPHI
_aNew Delhi
300 _axi+257
942 _cBK