?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=B+I+G&rft.au=Haussmann%2C+B+I+G&rft.aulast=Haussmann&rft.atitle=Yield+and+yield+stability+of+four+population+types+of+grain+sorghum+in+a+semi-arid+area+of+Kenya&rft.title=Crop+Science&rft.issn=1435-0653&rft.date=2000&rft.volume=40&rft.pages=319-329&rft.issue=2&rft.genre=article