The geology of the country south of Piet Retief
Subtitle: an explanation of sheet no. 68 (Piet Retief)
By: by W.A. Humphrey ... and L.J. Krige ...
Contributors: Krige, Louis James; Geological Survey (South Africa)
Series: South Africa. Geological survey. [Sheet maps] Explanation of sheet -- 68
Publisher: The Govt. Printer
Published: 1931
Place of publication: Pretoria
Language: eng
Number of pages: 72
Subjects: Geology; Maps
Notes: At head of title: Union of South Africa. Department of Mines and Industries. Geological Survey.

Bibliography, p. 67.