00343    a2200121   4500020001500000082001500015245003200030260005300062300002000115650003300135650002000168650003300188  a2880329779  a333.7bIUC  aThe IUCN sahel studies 1989  aEastern AfricabIUCN Regional Officec1989g1989  axxi,152p.c30cm  aEconomics of land and energy  aSocial sciences  aNatural resources and energy