00490nam a22001692  4500001001100000005001700011008004100028020001700069040001500086110006500101245002300166260002600189300001500215650004900230650003800279852000300317000002547620151217154549.0150930s         xx           000 0 eng d  a0192820808 :  aKABUcKABU2 aWorld commission on environment and development.@000018613010aOur common future.  aOxford :bOUP,c1987.  axv, 400 p. 0aSustainable developmentzAfrica.@0000150040 0aEnvironmental policy.@00001497511