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Keywords: South African Geology - Schwarz - 1912 Fig 13.png en Figure from South African Geology - Schwarz - 1912 Page 75 Fig 13 ” Section in Railway Cutting south of George Town showing the formation of sour soil A Decomposed granite B Quartz vein C Ironstone gravel D Grey soil E Humus 1912 File South African Geology - Schwarz - 1912 djvu Schwarz Ernest Hubert Lewis 1873-1928 other versions PD-old-70-1923 South African geology book |