00392nam a2200121 a 4500020002400000050001000024100002000034245006000054260009800114300001800212500002000230650002000250  a1853830410 (pbk.) :04aGB6111 aGrainger, Alan.14aThe threatening desert :bcontrolling desertification /  aLondon :bEarthscan in association with United Nations Environment Programme, Nairobi,c1990.  axiv, 369 p. ;  aIncludes index. 0aDesertification