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control works : 50 phrases in 20 subjects |
Astronautics | 1 |
Aviation | 1 |
Caspian | 4 |
Construction | 5 |
Ecology | 3 |
Economy | 2 |
Electronics | 2 |
General | 5 |
Management | 1 |
Metallurgy | 1 |
Military | 8 |
Natural resourses and wildlife conservation | 2 |
Nautical | 1 |
Project management | 1 |
Quality control and standards | 2 |
Sakhalin | 2 |
Security systems | 1 |
Technology | 5 |
Water resources | 1 |
Water supply | 2 |