@book{28065,
	author = {Willemse, J. and South Africa.},
	title = {Lead deposits in the Union of South Africa and South West Africa with some notes on associated ores /},
	publisher = {Govt. Printer,},
	year = {1944.},
	series = {Geological Survey memoir ;},
	address = {Pretoria :},
	note = {Cover-title.}
}