 | Science and Policy for Sustainable Development. 34 (5): 25. Bibcode:1992ESPSD..34e..25S. doi:10.1080/00139157.1992.9931445. GORBACHEV, MIKHAIL (21 April 2006)... 271 KB (29,469 words) - 16:12, 10 May 2024 |
| Science and Policy for Sustainable Development. 34 (5): 25. Bibcode:1992ESPSD..34e..25S. doi:10.1080/00139157.1992.9931445. GORBACHEV, MIKHAIL (21 April 2006)... 271 KB (29,469 words) - 16:12, 10 May 2024 |