Crop insurance
Valgren, V.N.
Crop insurance Risks, losses, and principles of protection - Washington 1922 - 1-27 p. - Crop United States Department of Agriculture. Bulletin No. 1043 .
Crop insurance Risks, losses, and principles of protection - Washington 1922 - 1-27 p. - Crop United States Department of Agriculture. Bulletin No. 1043 .