You searched for: Subject Climatology, Meteorology and Atmosphere Remove constraint Subject: Climatology, Meteorology and Atmosphere Institution Stanford Remove constraint Institution: Stanford Place American Samoa Remove constraint Place: American Samoa Place United States Virgin Islands Remove constraint Place: United States Virgin Islands Data type Polygon Remove constraint Data type: Polygon Format Shapefile Remove constraint Format: Shapefile Year 1979 Remove constraint Year: 1979
1979. 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.