@book{12472,
	author = {United States.},
	title = {Swine production.},
	publisher = {For sale by the Supt. of Docs., U.S. Govt. Print. Off.,},
	year = {1968]},
	series = {U.S. Dept. of Agriculture. Farmers' bulletin},
	address = {Washington,},
	edition = {[Rev.}
}