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	1.	Some graphs on the calculation of geological age, by Frans E. Wickman. With one plate. by Wickman, Frans E Series: Ser. C--Avhandlingar och uppsatser ; n:o 427. \| Årsbok (Sveriges geologiska undersökning) ; 33 : n:o 7. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Stockholm, Kungl. Boktryckeriet, P.A. Norstedt & Söner, 1939 Availability: No items available. Add to cart (remove)
	2.	A graph for the calculation of the age of minerals according to the lead method, by Frans E. Wickman. With one plate. by Wickman, Frans E Series: Ser. C--Avhandlingar och uppsatser ; n:o 458. \| Årsbok (Sveriges geologiska undersökning) ; 37 : n:o 7. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Stockholm, Kungl. boktryckeriet, P.A. Norstedt & söner, 1944 Availability: No items available. Add to cart (remove)
	3.	Papers on the mineralogy of southern Africa / by H.J. Nel ; with contributions by C.A. Strauss and Frans E. Wickman. by Nel, H. J Strauss, C. A Wickman, Frans E South Africa. Department of Mines and Industries Series: Memoir (Geological Survey (South Africa)) ; no. 43. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Pretoria : Govt. Printer, 1949 Dissertation note: H.J. Nel's thesis--Pretoria, 1947. Availability: No items available. Add to cart (remove)

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