The nitrate occurrences in the districts of Prieska & Hay, Cape province / by G.E.B. Frood and A. L. Hall.
- Johannesburg : Argus print. and publ. co., ltd., 1919.
- 51 p., [1] fold. leaf of plates : ill., diagrs. ; 25 cm.
- Geological survey memoir ; no. 14 .
- Memoir (Geological Survey (South Africa)) ; no. 14. .
At head of title: Union of South Africa, Department of Mines and Industries.
With: The geology of the Murchison range and district / by A.L. Hall. Pretoria : The Govt. Print. and Stationary Office, 1912. Bound together subsequent to publication.