1938, 1939, and 1940. Stanford Geospatial Center. This polygon shapefile is an index to 1:2,000,000 scale maps of East Asia (China, Siberia (Russia), Manchuria (China)), titled 'Nihyakumanbun no ic...
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1938. Stanford Geospatial Center. This polygon shapefile is an index to 1:10,000 scale maps of Manchuria, China, titled 'Shinkyō kinbō.' This map series was originally produced by t... Stanford Digital Repository.