 |
| acoustic image: 8 phrases in 6 subjects |
| Geophysics | 3 |
| Makarov | 1 |
| Nanotechnology | 1 |
| Security systems | 1 |
| Technology | 1 |
| Telecommunications | 1 |
|
| acoustic image: 8 phrases in 6 subjects |
| Geophysics | 3 |
| Makarov | 1 |
| Nanotechnology | 1 |
| Security systems | 1 |
| Technology | 1 |
| Telecommunications | 1 |