Time exposure of lighted calculator numbers at one of EPA's National Environmental Research Centers, June 1972
| Uploaded by | U.S. National Archives |
|---|---|
| License | No known copyright restrictions |
| Comments | 0 |
| Favorites | 20 |
| Views | 13,324 |
| Date taken | 1972-05 |
| Date uploaded | 2012-05-02 |
| Tags | nara:arcid=547671, usnationalarchives, environmentalprotectionagency, documerica |
| Visibility | public |