Mechanical Principles
| Year | 1930 |
|---|---|
| Country | USA |
| Director | Ralph Steiner |
| Cinematography | Ralph Steiner |
| Music | Colin McPhee |
| Genres | DocumentaryShort film |
| Runtime | 10 min. |
- Cast
| Year | 1930 |
|---|---|
| Country | USA |
| Director | Ralph Steiner |
| Cinematography | Ralph Steiner |
| Music | Colin McPhee |
| Genres | DocumentaryShort film |
| Runtime | 10 min. |