Subject
- Health[remove]29
- Health services accessibility15
- Medically underserved areas15
- Air quality management12
- Environment12
- Climatology, Meteorology and Atmosphere11
- United States. Clean Air Act11
- Medical care8
- Health service areas6
- Particulate nitrate5
- Sulfates5
- Organic compounds4
- California. Air Quality Standards Section3
- Carbon monoxide3
- Boundaries2
- Dental Care2
- Lead2
- Location2
- Mental health services2
- Nitrogen dioxide2