Agricultural Extension Service, University of Wyoming,
Marks, William Dennis, 1849-1914.
Marks, William Dennis, 1849-1914.
Fronk, W. Don (William Don), 1920-
Robb, T. R. (Theodore R.)
University of Wyoming. Agricultural Extension Service.
1967 Wyoming insect control recommendations for field crop insects : also insecticide names, relative toxicity of insecticides, dilution tables
1967 Wyoming insect control recommendations for field crop insects : also insecticide names, relative toxicity of insecticides, dilution tables
1967 Wyoming insect control recommendations for field crop insects :
Marks, William Dennis, 1849-1914.