000 00269nam a2200109Ia 4500
008 240109s2011 xx 000 0 und d
041 _aeng
082 _a620
100 _aManmia B. C.
245 _aEnvironmental Engineering-1
260 _aNew Delhi
_bLaxmi Pub.
_c2011
999 _c1019321
_d1019321