The geology of the Postmasburg manganese deposits and the surrounding country. An explanation of the geological map /
Nel, Louis T. 1895-
The geology of the Postmasburg manganese deposits and the surrounding country. An explanation of the geological map / by Louis T. Nel. - Pretoria : The Government printer, 1929. - 109 p., [XII] leaves of plates : ill., map ; 25 cm.
At head of title : Union of South Africa. Department of mines and industries. Geological survey.
gs 29000242
Manganese ores--South Africa.
Geology--South Africa--Postmasburg.
TN490.M3 / N4
The geology of the Postmasburg manganese deposits and the surrounding country. An explanation of the geological map / by Louis T. Nel. - Pretoria : The Government printer, 1929. - 109 p., [XII] leaves of plates : ill., map ; 25 cm.
At head of title : Union of South Africa. Department of mines and industries. Geological survey.
gs 29000242
Manganese ores--South Africa.
Geology--South Africa--Postmasburg.
TN490.M3 / N4