@book{140841,
	author = {University of Puerto Rico Rio Piedras campus},
	title = {Cuatro Conferencias Conmemorativas:},
	publisher = {Editorial Universitaria UPR ,},
	year = {c1977.},
	address = {Rio Piedras : },
	note = {At head of title: Recinto Universitario de Rio Piedras, Rectoría.}
}