@book{69723,
	author = {Blanco, Alberto.},
	title = {Curso de obligaciones y contratos},
	publisher = {Editorial Universitaria, Universidad de Puerto Rico},
	year = {1977-},
	address = {Río Piedras},
	edition = {3. ed.},
	note = {First-2d ed. published under title: Curso de obligaciones y contratos en el derecho civil español.}
}