горизонтальный слой: 51 phrases in 13 subjects |
Agrochemistry | 1 |
Cartography | 1 |
Construction | 2 |
Geology | 1 |
Geophysics | 4 |
Gold mining | 1 |
Mass media | 1 |
Mineral processing | 1 |
Mining | 33 |
Oil / petroleum | 2 |
Oil and gas | 1 |
Oil and gas technology | 1 |
Technology | 2 |