?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Akou%C3%83%C2%A8gnon%2C+Dipl.-Ing.sc.agr.+Guy-Erick&rft.aulast=Akou%C3%83%C2%A8gnon&rft.aufirst=Guy-Erick&rft.date=2008&rft.title=Options+for+improving+soil+fertility+in+the+southern+part+of+the+Republic+of+B%C3%83%C2%A9nin%3A+Where+does+Mucuna+find+its+niche%3F&rft.genre=proceeding