double leaf : 30 phrases in 14 subjects |
Architecture | 1 |
Biology | 1 |
Bridge construction | 1 |
Building structures | 1 |
Construction | 5 |
Electronics | 1 |
Forestry | 1 |
Hydraulic engineering | 2 |
Makarov | 2 |
Military | 1 |
Road works | 1 |
Technology | 9 |
Transport | 3 |
Uncommon / rare | 1 |