@book{220778,
	author = {UN. Statistical Division},
	title = {Manual de infraestructura geoespacial en apoyo de actividades censales.},
	publisher = {UN},
	year = {2009},
	series = {Estudios de métodos /Departamento de Asuntos Económicos y sociales, Departamento de Estadística. Serie F},
	address = {New York},
	note = {At head of title: Department of Economic and Social Affairs, Statistics Division.},
	url = {http://unstats.un.org/unsd/Demographic/standmeth/handbooks/Series_F103en.pdf}
}