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Start Over You searched for: Author United States. Bureau of Transportation Statistics Remove constraint Author: United States. Bureau of Transportation Statistics Publisher United States. Bureau of Transportation Statistics Remove constraint Publisher: United States. Bureau of Transportation Statistics Place United States Virgin Islands Remove constraint Place: United States Virgin Islands Place Guam Remove constraint Place: Guam Place United States Remove constraint Place: United States Data type Polygon Remove constraint Data type: Polygon Year 1990 Remove constraint Year: 1990

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1990. 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)1... United States. Bureau of Transportation Statistics.