?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Muwanga%2C+S.&rft.aulast=Muwanga&rft.aufirst=S.&rft.date=2005&rft.title=Enhancing+sorghum+(Sorghum+bicolar+L)-cowpea+(Vigna+unguiculata+L.)+intercrop+productivity+through+row+arrangements+and+orientation&rft.genre=proceeding