@book{11486,
	author = {Naciones Unidas. Departamento de Asuntos Económicos y Sociales.},
	title = {Selected world demographic indicators by countries, 1950 - 2000},
	publisher = {ONU,},
	year = {1975},
	series = {ESA/P/WP. 55},
	address = {New York :}
}