@book{27389,
	author = {Gevers, Traugott Wilhelm, and Partridge, Francis Chamberlain.},
	title = {The pegmatite area south of the Orange river in Namaqualand /},
	publisher = {Government Printer,},
	year = {1937.},
	series = {Geological survey memoir ;},
	address = {Pretoria :},
	note = {At head of title:  Union of South Africa.  Department of Mines.}
}