@book{6851,
	author = {Spahl, Terrance J. and Witzig, John W.,},
	title = {Ortopedia maxilofacial },
	publisher = {Ediciones Cientificas y Tecnicas,},
	year = {1993.},
	address = {Barcelona, España :},
	edition = {1a ed.},
	note = {solo se tiene los volumenes 2 y 3.}
}