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| Declaration on Environment and Development (un.org Alexander Demidov); Declaration on the Environment and Development (Rio Declaration on the Environment and Development 1992 Alexander Demidov) | |||
| Декларация по окружающей среде и развитию: 3 短语, 2 学科 |
| 组织机构名称 | 1 |
| 联合国 | 2 |