D. V. Loonan

Host resistance to Stewart's disease in maize.

J. R. Wallin, M. S. Zuber, G. F. Krause, 1979 .

Temperature and humidity associated with sporulation of Helminthosporium maydis race T.

J. R. Wallin, D. V. Loonan, 1977 .

Effect of leaf wetness duration and air temperature on Cercospora beticola infection of Sugarbeet.

J. R. Wallin, D. V. Loonan, 1971 .