@book{70874,
	author = {United Nations.},
	title = {Methods of appraisal of quality of basic data for population estimates.},
	publisher = {United Nations, Dept. of Economic and Social Affairs, Population Branch,},
	year = {1955.},
	series = {Population studies ;},
	address = {New York :},
	note = {"United Nations publication. Sales no.: 1956.XIII.2"}
}