@book{218861,
	author = {United States},
	title = {State BEARFACTS... Maryland},
	publisher = {U.S. Dept. of Commerce, Bureau of Economic Analysis},
	address = {Washington, D.C.},
	note = {Description based on 1969/1979; title from web page (viewed July 19, 2007).},
	url = {http://purl.access.gpo.gov/GPO/LPS83711}
}