@book{261462,
	author = {U.S. Citizenship and Immigration Services,},
	title = {Tarjetas de educaci�on c�ivica para el examen de naturalizac�ion.},
	publisher = {U.S. Department of Homeland Security, U.S. Citizenship and Immigration Services},
	address = {[Washington, D.C.] :},
	note = {Paper version available for sale by the Supt. of Docs., U.S. G.P.O.},
	url = {http://purl.fdlp.gov/GPO/gpo83221}
}