?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M+R&rft.au=Rao%2C+M+R&rft.aulast=Rao&rft.atitle=Preliminary+studies+of+intercropping+combinations+based+on+pigeonpea+or+sorghum&rft.title=Experimental+Agriculture&rft.issn=0014-4797&rft.date=1980&rft.volume=16&rft.pages=29-39&rft.issue=1&rft.genre=article