effective capacity: 20 phrases in 13 subjects |
Aerohydrodynamics | 1 |
Agrochemistry | 1 |
Ecology | 2 |
Firefighting and fire-control systems | 1 |
General | 1 |
Geography | 1 |
Hydrology | 1 |
Oil / petroleum | 3 |
Oil and gas technology | 1 |
Oilfields | 1 |
Solar power | 1 |
Technology | 5 |
Water resources | 1 |