00491nam a22001817a 450000500170000000600040001700700040002100800040002502000150002904000090004405000210005324500870007426000600016130000190022150000190024065000290025970000210028820170725113841.0000000000  a9966468811  aUOEL  aTD174b.W6 1993.  aThe world watch reader on global environmental issues /cedited by Lester R. Brown  aNairobi :bEast African Educational Publishers,cc1991.  a336 p. :bill.  aincludes index  aEnvironmental technology  aBrown, Lester R.