00530nam a2200169 a 450000100080000000500110000800800410001910000180006024501060007826000260018430000090021052000860021965000170030565000130032265000090033565000160034412630492008-03-05       1992    bl uuuu     u0uu1 u    #d1 aLEPRUN, J. C.  aStudy of the ecological factors and pastoral potentialities in a saharo-sahelian environment in Mali.  aFortaleza; ICIDc1992  a50p.  aEnvironment factors;Soils;Vegetation;Biogeography; Soil-vegetation re-lationship;  aBiogeografia  aEcologia  aSolo  aVegetação