000			00353pab a2200157 454500
008			180718b1998 xxu||||| |||| 00| 0 eng d
100			_aSeth, Keshab Chandra
245			_aOzone layer depletion
260			_c1998
300			_ap.42,44,50
362			_aJul
650			_aEnvironment
700			_aAlappat, B.J.
773			_aYojana
909			_a37941
999			_c37941 _d37941