@book{218622,
	author = {United States},
	title = {Population profile of the United States},
	publisher = {U.S. Dept. of Commerce, Bureau of the Census},
	address = {Washington, D.C.},
	note = {Description based on: 1980.},
	url = {http://purl.access.gpo.gov/GPO/LPS22687}
}