Mica in the eastern Transvaal
By: by A.L. Hall ...
Series: South Africa. Geological Survey. Memoir -- no. 13; Memoir (Geological Survey (South Africa)) -- 13.
Publisher: Argus Printing and Pub. Co., Ltd.
Published: 1920
Place of publication: Johannesburg
Language: eng
Number of pages: 95
Subjects: Mica
Notes: At head of title: Union of South Africa. Department of mines and industries.