000			00303nam a22001337a 4500
003			SGT
082			_a333.7071 _bT13A
100			_aASTHANA, D.K
245			_aA TEXT BOOK OF ENVIRONMENTAL STUDIES
260			_aDELHI _bS. CHAND _c2013
300			_a397
650			_aENVIRONMENTAL STUDIES
942			_2ddc _cBK
999			_c8479 _d8479