@book{12533,
	author = {Pollock, Robert S. and United States.},
	title = {Soil survey, Thayer County, Nebraska},
	publisher = {U.S. Dept. of Agriculture, Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]},
	year = {1968.},
	address = {Washington]},
	note = {Cover title.}
}