@book{25844,
	author = {Hall, A. L.},
	title = {The geology of the Barberton gold mining district, including adjoining portions of northern Swaziland /},
	publisher = {Govt. Print. and Stationery Office,},
	year = {1918.},
	series = {Geological Survey memoir ;},
	address = {Pretoria :},
	note = {At head of title: Union of South Africa. Department of mines and industries.}
}