000 00294nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a628.5
100 _aJerry A Nathanson
245 0 _aBasic Environmental Technology
250 _a5
260 _bPhi Learning, New Delhi
_c2009
942 _cBK
999 _c17263
_d17263