Note 14 — Chapter I · PLATINUM METALS: THEIR OCCURRENCES, CHARACTERS AND USES
Reading edition
Hill, Jas. M.: “Platinum Deposits of the World,” Eng. Min. Journ., June 30, 1917.
Reading edition
Hill, Jas. M.: “Platinum Deposits of the World,” Eng. Min. Journ., June 30, 1917.