@book{9781,
	author = {INSTITUTO NACIONAL DE ESTADISTICA, GEOGRAFIA E INFORMATICA, ED.},
	title = {ESTADISTICAS DEMOGRAFICAS EDICION 2001 -    . CUADERNO NUM. 13 -/ },
	publisher = {INEGI},
	year = {2001},
	address = {MEXICO: },
	note = {ISSN 0187-6171}
}