?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=B&rft.au=Douthwaite%2C+B&rft.aulast=Douthwaite&rft.atitle=Ecoregional+research+in+Africa%3A+learning+lessons+from+IITA's+Benchmark+Area+Approach&rft.title=Experimental+Agriculture&rft.issn=0014-4797&rft.date=2005&rft.volume=41&rft.pages=271-298&rft.issue=3&rft.genre=article