?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=J+V+D+K+K&rft.au=Rao%2C+J+V+D+K+K&rft.aulast=Rao&rft.atitle=Residual+Effect+of+Pigeonpea+(Cajanus+cajan)+on+Yield+and+Nitrogen+Response+of+Maize&rft.title=Experimental+Agriculture&rft.issn=0014-4797&rft.date=1983&rft.volume=19&rft.pages=131-141&rft.issue=2&rft.genre=article