@book{219824,
	author = {United States},
	title = {Seguro Social, seguridad de ingreso suplementario para extranjeros},
	address = {Baltimore,Md.},
	note = {Description based on :Mar. 2002; title from title screen (viewed June 16, 2003).},
	url = {http://purl.access.gpo.gov/GPO/LPS182282}
}