@book{175653,
	author = {United Nations. and United Nations.},
	title = {Demographic transition and socio-economic development :},
	publisher = {United Nations,},
	year = {1979.},
	series = {[Document] - United Nations ; ST/SOA/SER. A/50-[Add. 1] : Population studies ; no. 50},
	address = {New York :}
}