 |
| |||
| 联合国人类环境会议 | |||
|
United Nations Human Environment Conference : 8 phrases in 6 subjects |
| Animal husbandry | 1 |
| Ecology | 1 |
| Environment | 2 |
| Law | 1 |
| Technology | 1 |
| United Nations | 2 |
|
| |||
| 联合国人类环境会议 | |||
|
United Nations Human Environment Conference : 8 phrases in 6 subjects |
| Animal husbandry | 1 |
| Ecology | 1 |
| Environment | 2 |
| Law | 1 |
| Technology | 1 |
| United Nations | 2 |