investigations : 391 phrases in 19 subjects |
Airports and air traffic control | 1 |
American usage, not spelling | 1 |
Archiving | 1 |
Astronautics | 1 |
Aviation | 47 |
Business style | 1 |
Diplomacy | 4 |
Ecology | 3 |
Economy | 10 |
Finances | 8 |
General | 9 |
Human rights activism | 8 |
Information technology | 2 |
Law | 250 |
Mathematics | 1 |
Military | 33 |
Oil and gas | 5 |
Psychology | 4 |
Technology | 2 |