Potato diseases and their treatment
Galloway ,B.T.
Potato diseases and their treatment - Washington 1899 - 1-12 p. - Potato, Disease United States Department of Agriculture. Farmers Bulletin No. 91 .
Potato diseases and their treatment - Washington 1899 - 1-12 p. - Potato, Disease United States Department of Agriculture. Farmers Bulletin No. 91 .