000 00363nam a2200157 4500
020 _a9788121903592
082 _a660.2 DAR
100 _aDara,S.S
245 _aA textbook of engineering chemistry
260 _aNew Delhi
_bS.Chand
_c1986
300 _a960 p
650 _aWater treatment
650 _aphotochemistry
650 _agreen chemistry
942 _cBK
999 _c1611
_d1611