| 环境, 联合国 |
Gothenburg Protocol; 1999 Gothenburg Protocol to Abate Acidification, Eutrophication and Ground-level Ozone; Protocol to Abate Acidification, Eutrophication and Ground-level Ozone; Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution to abate Acidification, Eutrophication and Ground-Level Ozone |
