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Between November 9, 2010 and November 29, 2010, the 2008 ACS 1-year PUMS files named "csv_pus.zip" and "csv_hus.zip" erroneously contained 2009 ACS 1-Year PUMS data. These two 2008 ACS 1-Year PUMS data files were reissued on November 29, 2010. The remaining 2008 ACS 1-Year PUMS files – including the state-level files and SAS format files – were unaffected by this problem.
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