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| vertical control survey network (MichaelBurov); vertical control network (MichaelBurov); vertical control (MichaelBurov) | |||
| высотная сеть: 21 phrases in 8 subjects |
| Astronautics | 1 |
| Cartography | 12 |
| General | 1 |
| Makarov | 1 |
| Meteorology | 1 |
| Navigation | 1 |
| Surveying | 3 |
| Technology | 1 |