000 00314nam a2200121Ia 4500
008 250409s9999 xx 000 0 und d
020 _a81-224-1835-X
082 _a628
_bRAO
100 _aRao, C.S
245 0 _aEnvironmental pollution control engineering
260 _aVidhyanagar
_bNew age
_c2006
365 _a299
999 _c259730
_d259730