000 00267nam a2200109Ia 4500
020 _a8121908833
082 _a628.5
100 _aS.S.DARA
245 2 _aA TEXT BOOK OF ENVIRONMENTAL CHEMISTRY AND POLLUTION CONTROL
260 _c1993
_aNEW DELHI
_bS. CHAND
942 _cBK
999 _c6412
_d6412