Economic relation of tractors to farm organization in the grain farming areas of eastern Washington
Landerholm, E.F.
Economic relation of tractors to farm organization in the grain farming areas of eastern Washington - Washington 1935 - 1-51 p. - Economic, Farm, Organization, Grain, Farming Washington Agricultural Experiment Station. Bulletin No. 310 .
Economic relation of tractors to farm organization in the grain farming areas of eastern Washington - Washington 1935 - 1-51 p. - Economic, Farm, Organization, Grain, Farming Washington Agricultural Experiment Station. Bulletin No. 310 .