| |||
surface de base | |||
surface de terrain |
ground area : 18 phrases in 12 subjects |
Aviation | 1 |
Communications | 2 |
Construction | 1 |
Figurative | 1 |
Finances | 1 |
General | 2 |
Industry | 2 |
Military | 1 |
Natural sciences | 1 |
Politics | 1 |
Technology | 4 |
Transport | 1 |