Exterior view of several of the solar heated greenhouses at the University of Arizona Environmental Research Laboratory..., 04/1974.
| Uploaded by | U.S. National Archives |
|---|---|
| License | No known copyright restrictions |
| Comments | 0 |
| Favorites | 2 |
| Views | 5,636 |
| Date taken | 1974-04 |
| Date uploaded | 2012-04-10 |
| Tags | usnationalarchives, documerica, environmentalprotectionagency, boydnorton, nara:arcid=555369 |
| Visibility | public |