@book{12357,
	author = {Eck, Harold V., and Ford, Robert H., and Texas Agricultural Experiment Station.},
	title = {Productivities of horizons of seven benchmark soils of the southern Great Plains},
	publisher = {Agricultural Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.,},
	year = {1967]},
	series = {United States. Dept. of Agriculture. Conservation research report},
	address = {Washington]},
	note = {Prepared in cooperation with Texas Agricultural Experiment Station.}
}