 |
| well screen: 22 phrases in 13 subjects |
| Cinematography | 2 |
| Construction | 4 |
| General | 4 |
| Geology | 1 |
| Hydraulic engineering | 2 |
| Makarov | 1 |
| Melioration | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 1 |
| Oilfields | 1 |
| Technology | 1 |
| Thermal engineering | 2 |