@book{1960,
	author = {ECA and Mario Lungo;Alejandro Portes;Lilian Vega;Mario Lungo;Norma Stoltz},
	title = {El fenomeno de la migración en el salvador y la política migratoria del gobierno},
	publisher = {Universidad "Jose Simeon Cañas"},
	year = {2002.},
	series = {648 / oct},
	address = {San salvador, El salvador;}
}