American Community Survey (ACS): Public Use Microdata Sample (PUMS), 2001
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https://www.icpsr.umich.edu/web/ICPSR/studies/3890
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资源简介：
The American Community Survey (ACS) is a nationwide survey designed to provide communities a fresh look at how they are changing. It will replace the decennial long form in future censuses and is a critical element in the Bureau of the Census re-engineered 2010 census. The American Community Survey is conducted under the authority of Title 13, United States Code, Sections 141 and 193, and response is mandatory.
提供机构：
ICPSR - Interuniversity Consortium for Political and Social Research
创建时间：
2014-01-10
