000 00310nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a628.5
100 _aOm Prakash Gupta
245 0 _aElements of Environmental Pollution Control
250 _a1
260 _bKhanna Publishers,New Delhi
_c2016
942 _cBK
999 _c29816
_d29816