| Earthquake below. ▶ |
1975 |
NASA |
500 |
16mm |
|
sound |
| Flood Below |
1975 |
Ames Research Center |
|
16mm |
|
sound |
| Pollution below. ▶ |
1975 |
National Audiovisual Center |
500 |
16mm |
|
sound |
| Tornado Below ▶ |
1975 |
U.S. National Aeronautics and Space Administration (NASA) |
|
16mm |
|
sound |