The geology of the Postmasburg manganese deposits and the surrounding country. An explanation of the geological map / by Louis T. Nel.
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TextPublication details: Pretoria : The Government printer, 1929.Description: 109 p., [XII] leaves of plates : ill., map ; 25 cmSubject(s): LOC classification: - TN490.M3 N4
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At head of title : Union of South Africa. Department of mines and industries. Geological survey.
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