Atlas of American agriculture: physical basis including land relief, climate, soils, and natural vegetation of the United States

Land relief / by F.J. Marschner, 1936

Climate : temperature, sunshine, and wind / by Joseph B. Kincer, 1928

Climate : frost and the growing season / by William Gardner Reed, 1918

Climate : precipitation and humidity / by J.B. Kincer, 1922

Soils of the United States / by C.F. Marbut, 1935

The physical basis of agriculture : Natural vegetation, grassland and desert shrub / by H.L. Shantz. Forests / by Raphael Zon, 1924.