?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=K+B&rft.au=Saxena%2C+K+B&rft.aulast=Saxena&rft.atitle=Variation+for+natural+out-crossing+in+pigeonpea&rft.title=Euphytica&rft.date=1990&rft.pages=143-148&rft.issue=46&rft.genre=article