@book{53920, author = {Brailowsky, Simón}, title = {Las sustancias de los sueños:}, publisher = {Fondo de Cultura Económica, }, year = {2002.}, series = {La ciencia para todos}, address = {México: }, edition = {3aed}, url = {http://sgi-ab.unae.edu.ec/libros/01-003375.html} }