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Start Over You searched for: Year 2008 Remove constraint Year: 2008 Place American Samoa Remove constraint Place: American Samoa Creator United States. Bureau of Transportation Statistics Remove constraint Creator: United States. Bureau of Transportation Statistics

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2008. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the lead (Pb) 3... United States. Bureau of Transportation Statistics.
2008. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the ozone (O3) ... United States. Bureau of Transportation Statistics.