info:oai:icrisat:1821info:ofi/fmt:xml:xsd:journalHiernauxPHiernaux, PBieldersC LBielders, C LValentinCValentin, CBationoABationo, AFernandez-RiveraSFernandez-Rivera, SEffects of livestock grazing on physical and chemical properties of sandy soils in Sahelian rangelandsJournal of Arid Environments199941231-2453article