?url_ver=Z39.88-2004&rft_id=0149&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=B.J.&rft.aulast=Ruffing&rft.au=Ruffing%2C+B.J.&rft.title=Transaction+of+the+ASAE&rft.pages=12-13&rft.date=1971&rft.issue=1&rft.volume=14&rft.atitle=Sugar+Beet+Plot+Harvester&rft.genre=article