?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S+D&rft.au=Singh%2C+S+D&rft.aulast=Singh&rft.atitle=The+role+of+sporangia+in+the+epidemiology+of+pearl+millet+downy+mildew&rft.title=Phytopathology+&rft.issn=0031-949X&rft.date=1980&rft.volume=70&rft.pages=1187-1190&rft.issue=12&rft.genre=article