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	1.	The geology and archaeology of the Vaal River Basin / by P.G. Söhnge ... [et al.]. by Söhnge, A. P. G South Africa. Department of Mines and Industries Series: Memoir (Geological Survey (South Africa)) ; no. 35. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Pretoria : Govt. Printer, 1937 Availability: No items available. Add to cart (remove)
	2.	The geology of the Messina copper mines and surrounding country / by P.G. Söhnge. by Söhnge, A. P. G South Africa. Department of Mines and Industries Series: Memoir (Geological Survey (South Africa)) ; no. 40. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Pretoria : Govt. Printer, 1946 Availability: No items available. Add to cart (remove)

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