000			00327nam a2200121Ia 4500
005			20260325112136.0
008			260325s9999||||xx |||||||||||||| ||und||
082			_a363.7 C399T
100			_aChawla, Shashi
245		0	_aTextbook of environmental studies
260			_aNew Delhi _bTata McGraw Hill Education _c2012
942			_cBK
999			_c270270 _d270270