@book{22230,
	author = {Agustín, José.},
	title = {Trigonometria mexicana  /},
	publisher = {Planeta  },
	year = {1991.},
	series = {Espejo de Mexico.},
	address = {Mexico },
	note = {Contenido: v.1 La vida en México 1940-1970; v.2 La vida en Mexico 1970-1982}
}