USA (Non-Attainment Areas: Ozone, 2006)
- Non-attainment and maintenance areas for the United States and its territories. For more detailed information on this dataset, see the Overview Description in the Entity Attribute section of this document.
- U.S. Bureau of Transportation Statistics (BTS)
- USA and United States
- nonattainment areas, maintenance areas, criteria pollutant, ozone, non-attainment areas, atmosphere, and polygon
- Held by
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