Laboratory at EPA's Las Vegas National Research Center technician holds up an air filter, May 1972
| Uploaded by | U.S. National Archives |
|---|---|
| License | No known copyright restrictions |
| Comments | 0 |
| Favorites | 6 |
| Views | 8,654 |
| Date taken | 1972-05 |
| Date uploaded | 2012-05-02 |
| Tags | nara:arcid=548891, usnationalarchives, environmentalprotectionagency, documerica |
| Visibility | public |