Author: Wybergh, W
Title: The Building Stones of the Union of South Africa - Union of South Africa - Department of Mines and Industries - Geological Survey Memoir No. 29
Description: Department of Mines and Industries - Union of South Africa, 1932. Soft Cover. 244p Plate and large folding map of localities. In original blue grey wrappers. front wrapper chipped whilst the rear wrapper is detached. The map is loose with a tear along a fold. See scans. . Good

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