000 00328nam a2200121Ia 4500
008 250409s9999 xx 000 0 und d
020 _a81-7401-057-8
082 _a628.53
_bGAR
100 _aGarg,S.K
245 0 _aSewage disposal and air pollution engineering Vol-2
260 _aNew Delhi
_bKhanna Pub.
_c2005
365 _a205
999 _c252674
_d252674