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1. Population by County, Census: China, 2000

2000. China. Guo jia tong ji ju, University of Michigan. China Data Center, Beijing Hua tong ren shi chang xin xi you xian ze ren gong si, and Zhonghua di tu xue she. This polygon dataset represents county boundaries and population data in China from the 2000 Census. This dataset also includes detailed demographi... University of Michigan. China Data Center.

2. State Boundaries with Demographics: California, Oregon, & Washington, 1990-1999

1990. California. Department of Fish and Game. Marine Resources Region and California. Department of Fish and Game. Marine Resources Region. This polygon shapefile contains the state boundaries for California, Oregon, & Washington. Statistical data such as population (1990 and 1999),... California. Department of Fish and Game. Marine Resources Region.

3. Population by County, Census: China, 1982

1982. China. Guo jia tong ji ju, Beijing Hua tong ren shi chang xin xi you xian ze ren gong si, and University of Michigan. China Data Center. This polygon dataset represents county boundaries and population data in China from the 1982 Census. These data were primarily based on "China Map ... University of Michigan. China Data Center.