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Shapefile
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Administrative and political divisions
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Census
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Society
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Polygon
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1. U.S. States, 2007-2013
2010. TomTom North America, Inc. and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the 50 states, the District of Columbia, and Puerto Rico of the United States at 1:100,000 scale.This layer also ... Environmental Systems Research Institute (Redlands, Calif.).
2. Population by County, Census: China, 1953
1953. China. Guo jia tong ji ju, All China Marketing Research Co., Zhonghua di tu xue she, and University of Michigan. China Data Center. This polygon shapefile contains county boundaries and population data for China from the 1953 Census. These data were primarily based on "The Histo... University of Michigan. China Data Center.
3. Provincial Boundaries: China, 1964
1964. Beijing Hua tong ren shi chang xin xi you xian ze ren gong si, China. Guo jia tong ji ju, Zhonghua di tu xue she, and University of Michigan. China Data Center. This polygon dataset represents provincial boundaries in China from 1964. These data were primarily based on "The Historical Administrative Maps of... University of Michigan. China Data Center.