000			00291nam a2200133Ia 4500
020			_a8121927641
082			_a303.707 AST
100			_aASTHANA, D.K.
245			_aTEXTBOOK OF ENVIRONMENTAL STUDIES
260			_bS CHAND _c2014
300			_a397
650			_aENVIRONMENT
942			_2ddc _cB
999			_c68310 _d68310