 |
| |||
| ground-based surveillance | |||
| surveillance au sol: 4 phrases in 4 subjects |
| Environment | 1 |
| Natural resourses and wildlife conservation | 1 |
| Transport | 1 |
| United Nations | 1 |
|
| |||
| ground-based surveillance | |||
| surveillance au sol: 4 phrases in 4 subjects |
| Environment | 1 |
| Natural resourses and wildlife conservation | 1 |
| Transport | 1 |
| United Nations | 1 |