The coal resources of the Union of South Africa 
Series: South Africa. Geological Survey. Memoir; no. 19, vol. I-III
Publisher: The Government Printing and Stationery Office
Published: 1922
Place of publication: Pretoria
Language: eng
Subjects: Coal -- South Africa.
Notes: At head of title: Union of South Africa. Dept. of mines and industries.
Table of contents: title: v. 1. The coal fields of Wilbank, Springs and Heidelberg, and of the Orange Free State. 1922.; title: v. 2. The inland coal fields of Natal. 1925.; title: v. 3. The coal fields of the eastern and south-eastern Transvaal, Springbok flats, Waterberg, Zoutpansberg and of the Cape Province. 1928.