00325cam a22001097a 4500008004000000082001300040100002000053245009200073260002400165300001000189650001600199180718b1992   xxu||||| |||| 00| 0 eng d  aO91 B469  aBhargava, Gopal  aEnvironmental challenges and ecological disaster: global perspectivecby Gopal Bhargava  aDelhibMittalc1992  a247p.  aEnvironment