Description: ÒProduction of copper, lead, and zinc in Asia in 1913ÉEach dot represents 1 per cent of worldÕs production. A cross represents less than 1/2 per cent of worldÕs production ÉChanges in boundaries and of names of countries in Asia caused by the war are shown on map of Asia in the introductory text. May 1, 1920. — Department of the Interior, 1921
Source: Department of the Interior , World Atlas of Commercial Geology (Washington, DC: Department of the Interior , 1921) Plate 38
Map Credit: Courtesy the private collection of Roy Winkelman |
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