Productivities of horizons of seven benchmark soils of the southern Great Plains - Eck, Harold V., 1924-; Ford, Robert H.; Fanning, Carl D.; Texas Agricultural Experiment Station (Washington] Agricultural Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1967)
Prepared in cooperation with Texas Agricultural Experiment Station.
Bibliography: p. 35-36.
Keywords: Soils -- Great Plains; Soils -- Analysis