"Wonderstone"
By: by Louis T. Ne.l ... H. Jacobs ... J.T. Allan ... and G.R. Bozzoli ...
Contributors: Jacobs, H., author; Allan, J. T., author; Bozzoli, G. R., author
Series: South Africa. [Geological survey] Geological series. Bulletin -- no. 8; Bulletin (Geological Survey (South Africa)) -- 8.
Publisher: Government printer
Published: 1937
Place of publication: Pretoria
Language: eng
Number of pages: 44
Subjects: Building stones
Notes: At head of title: ... Union of South Africa. Department of mines.