Zhongguo ke xue yuan, Chinese Academy of Sciences, and Beijing Hua tong ren shi chang xin xi you xian ze ren gong si. This collection of polygon shapefiles contains administrative boundary maps of China at the county, city and province level for the years from 1949... All China Marketing Research Co., Ltd. and China Data Center, University of Michigan.
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The Mongolian 20th-century Historical GIS Database project was designed to create datasets that could integrate and align well together. The collec...