plan d' eau : 79 phrases in 12 subjects |
Aviation | 1 |
Construction | 3 |
Forestry | 1 |
General | 1 |
Geology | 12 |
Hydraulic engineering | 35 |
Hydrography | 2 |
Military | 2 |
Natural resourses and wildlife conservation | 6 |
Oil and gas technology | 1 |
Technology | 14 |
United Nations | 1 |