?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Ramakrishna%2C+A&rft.aufirst=A&rft.aulast=Ramakrishna&rft.issn=0041-3216&rft.pages=5-11&rft.atitle=Productivity+and+light+interception+in+upland+rice+-+legume+intercropping+systems&rft.volume=71&rft.issue=1&rft.title=Tropical+Agriculture(Trinidad)&rft.date=1994&rft.genre=article