@book{116305,
	author = {United States Department of the Interior. and Puerto Rico},
	title = {Puerto Rico},
	publisher = {s.n.},
	year = {1947-},
	address = {Washington},
	note = {Prepared 1947 in cooperation with the Governor of Puerto Rico; 1948- prepared by the Insular Government of Puerto Rico in cooperation with the Dept. of the Interior.}
}