@book{177831,
	author = {United Nations.},
	title = {Economic survey of Africa :},
	publisher = {United nations,},
	year = {1968.},
	series = {[United Nations. Document]},
	address = {New York :},
	note = {"United Nations publication. Sales no.: 66.IIK.3, E67.II.K.20, E69.II.K.1}
}