 |
| |||
| natural time-varying magnetic field; time-variable natural magnetic field | |||
| переменное естественное магнитное поле: 6 phrases in 2 subjects |
| Geophysics | 5 |
| Oil / petroleum | 1 |
|
| |||
| natural time-varying magnetic field; time-variable natural magnetic field | |||
| переменное естественное магнитное поле: 6 phrases in 2 subjects |
| Geophysics | 5 |
| Oil / petroleum | 1 |