Observer operating field-type Ruska magnetometer.
Photo Category: Coast and Geodetic Survey - Geophysics Geomagnetism
Photo Date: 1957 Ca.
| 640 x 559 | 53.49 KB | |
| 1280 x 1117 | 185.31 KB | |
| 1920 x 1675 | 370.16 KB | |
| 2012 x 1755 | 459.69 KB |
| Added On | 16th October 2015 |
| Viewed | 5 viewed |