000			00333nam a2200133Ia 4500
005			20260205055427.0
008			260111s9999||||xx |||||||||||||| ||und||
082			_a363.7 D32T
100			_aDawan, Ashok
245		0	_aTextbook of environmental studies
260			_aNew Delhi _bSaurabh pub. _c2008
300			_a310p.
942			_cBK
999			_c153466 _d153466