The Clean Air Challenge
| Title | The Clean Air Challenge |
| Publication Type | Magazine Article |
| Year of Publication | 2002 |
| Authors | Jeffords, James M. |
| Magazine | National Parks |
| Volume | 76 |
| Issue Number | 11-12 |
| Pages | 16-17 |
| Date Published | November/December |
| Subjects | Acid rain, Air pollution, Climate change |
| URL | http://books.google.com/books?id=Oa_eVUD10MkC&pg=PA16&dq=national+parks+magazines&source=gbs_toc_r&cad=2#v=onepage&q&f=false |
