Onion diseases and their control
Walker, J.C.
Onion diseases and their control - Washington 1919 - 1-25 p. - Onion, Disease United States Department of Agriculture. Farmers Bulletin No. 1060 .
Onion diseases and their control - Washington 1919 - 1-25 p. - Onion, Disease United States Department of Agriculture. Farmers Bulletin No. 1060 .