000			00347nam a2200145Ia 4500
008			241226s9999 xx 000 0 und d
020			_a8131517608
082			_a628 _bDAV
100			_aDave Deeksha
245		0	_aEnviromental studies
260			_aNew Delhi : _bCengage Learning, _c2012.
300			_a369
365			_a325
650			_aCognosy
999			_c196189 _d196189