SEDIS - Thesaurus
Clean Air Act  | |
|---|---|
| UF | CAA (Clean Air Act) |
| RT | pollution |
| United States | |
| environmental geology | |
| air | |
| legislation | |
| regulations | |
| U. S. Environmental Protection Agency | |
| SN | 1970. Amended 1977 and 1990. |
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