Productivities of horizons of seven benchmark soils of the southern Great Plains /

by Eck, Harold V., 1924-, Ford, Robert H., Fanning, Carl D.
Washington, D.C.] : Agricultural Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1967

Wind in the southwestern Great Plains

by Johnson, Wendell C. (Wendell Clifford), 1914-
Washington] Agricultural Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1965