?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=P&rft.au=Hiernaux%2C+P&rft.aulast=Hiernaux&rft.atitle=Effects+of+livestock+grazing+on+physical+and+chemical+properties+of+sandy+soils+in+Sahelian+rangelands&rft.title=Journal+of+Arid+Environments&rft.date=1999&rft.volume=41&rft.pages=231-245&rft.issue=3&rft.genre=article