@book{36073,
	author = {Spiegelman, Mortimer.},
	title = {Introducción a la demografía /},
	publisher = {Fondo de Cultura Económica,},
	year = {c1972},
	series = {Sección de obras de economía},
	address = {Mexico :},
	edition = {1. ed.},
	note = {Translation of: Introduction to demography.}
}