?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=C&rft.au=Mathews%2C+C&rft.aulast=Mathews&rft.atitle=Maize+and+Pigeonpea+Intercropping+Systems+in+Mpumalanga%2C+South+Africa&rft.title=International+Chickpea+and+Pigeonpea+Newsletter&rft.issn=1023-4861&rft.date=2001&rft.volume=8&rft.pages=52-53&rft.genre=article