A graph for the calculation of the age of minerals according to the lead method Age of minerals Wickman, Frans E. creator text bibliography sw Stockholm Kungl. boktryckeriet, P.A. Norstedt & söner 1944 monographic eng
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6 p. diagrs. (1 fold.) 24 cm. by Frans E. Wickman. With one plate. At head of title: Sveriges geologiska undersökning ... "References": p. 6. Geological time Mineralogy, Determinative QE282 .A3 ser.C, no. 458 Ser. C--Avhandlingar och uppsatser ; n:o 458 Årsbok (Sveriges geologiska undersökning) ; 37 : n:o 7 gs 47000549 U.S. Geol. Survey. Library 891025 20260227111353.0 gs 47000549