 |
| |||
| 非洲环境问题部长级会议 | |||
|
Ministerial Conference on the African Environment : 5 phrases in 2 subjects |
| Desert science | 1 |
| United Nations | 4 |
|
| |||
| 非洲环境问题部长级会议 | |||
|
Ministerial Conference on the African Environment : 5 phrases in 2 subjects |
| Desert science | 1 |
| United Nations | 4 |