Take-all of wheat and its control
Humphrey, H.B., Johnson, A.G.
Take-all of wheat and its control - Washington 1921 - 1-12 p. - Wheat United States Department of Agriculture. Farmers Bulletin No. 1226 .
Take-all of wheat and its control - Washington 1921 - 1-12 p. - Wheat United States Department of Agriculture. Farmers Bulletin No. 1226 .