@book{26952,
	author = {Graham, Alexander Chimes, and Lategan, P. N. and Transvaal Chamber of Mines, Johannesburg.},
	title = {The coals of the Witbank District (Transvaal)},
	publisher = {Published by the Transvaal Chamber of Mines, Collieries Committee, and printed by Hortors Limited,},
	year = {1931.},
	address = {Johannesburg,}
}