000 00443nam a22001697a 4500
003 OSt
020 _a9789386173225
082 _a628.3 OM
100 _aOm Prakash Gupta
245 _aElements of Water Pollution Control Engineering
250 _a1
260 _aNew Delhi
_bKhanna Publishing Co
_c2019
300 _a901
440 _aElements of Water Pollution Control Engineering
650 _aChemical Engineering
942 _2ddc
_cBK
999 _c825447
_d825447