?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=D+E&rft.au=Frederickson%2C+D+E&rft.aulast=Frederickson&rft.atitle=Sorghum+ergot+-+a+sticky+disease+problem+in+southern+Africa&rft.title=International+Sorghum+and+Millets+Newsletter&rft.issn=1023-487X&rft.date=2000&rft.volume=41&rft.pages=7-8&rft.genre=article