00266pab a2200121 454500008004000000100001600040245002700056260000900083300000900092362000900101650001600110773001800126180718b1989   xxu||||| |||| 00| 0 eng d  aSingh, P.R.  aProblem of environment  c1989  a43-5  aJul.  aEnvironment  aCivic Affairs