changing over : 57 phrases in 16 subjects |
Artillery | 3 |
Aviation | 3 |
Biology | 2 |
Business | 1 |
Construction | 1 |
Economics | 5 |
Electronics | 2 |
Finances | 1 |
General | 4 |
Makarov | 14 |
Military | 7 |
Non-destructive testing | 1 |
Oilfields | 3 |
Rail transport | 2 |
Shipbuilding | 1 |
Technology | 7 |