最終更新日:2022/12/24
What with the cyanide and electrolytic methods of gold extraction, it is only to be wondered at that the decline in the value of this metal has not been more debacular and tragic than has been seen.
編集履歴(0)
What with the cyanide and electrolytic methods of gold extraction, it is only to be wondered at that the decline in the value of this metal has not been more debacular and tragic than has been seen.