?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S&rft.au=Leath%2C+S&rft.aulast=Leath&rft.atitle=Variation+in+expression+of+monogenic+resistance+in+corn+to+Exserohilum+turcicum+race+3+under+different+temperature+and+light+regimes&rft.title=Phytopathology+&rft.issn=0031-949X&rft.date=1990&rft.volume=80&rft.pages=309-313&rft.issue=3&rft.genre=article