Wheat scab and its control
Johnson, Aaron G., Dickson, James G.
Wheat scab and its control - Washington 1921 - 1-16 p. - Wheat United States Department of Agriculture. Farmers Bulletin No. 1224 .
Wheat scab and its control - Washington 1921 - 1-16 p. - Wheat United States Department of Agriculture. Farmers Bulletin No. 1224 .