Potato diseases and their control
Dykstra, T.P.
Potato diseases and their control - Washington 1941 - 1-65 p. - Potato, Diseases United States Department of Agriculture. Farmers Bulletin No. 1881 .
Potato diseases and their control - Washington 1941 - 1-65 p. - Potato, Diseases United States Department of Agriculture. Farmers Bulletin No. 1881 .