site investigation: 15 phrases in 11 subjects |
Caspian | 2 |
Clinical trial | 1 |
Construction | 3 |
Ecology | 1 |
Electronics | 1 |
Geology | 1 |
Military | 1 |
Natural resourses and wildlife conservation | 1 |
Nuclear and fusion power | 1 |
Security systems | 2 |
Weapons of mass destruction | 1 |