| Views | |
| Environmental agreements : a new instrument of environmental policy | 55 |
| September 2012 | October 2012 | November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | |
| Environmental agreements : a new instrument of environmental policy | 5 | 3 | 12 | 9 | 13 | 8 | 4 | 1 |
| Views | |
| China | 15 |
| United States of America | 8 |
| Italy | 5 |
| Russian Federation | 4 |
| Netherlands | 1 |
| Ukraine | 1 |
| Views | |
| Beijing | 12 |
| Romeo | 7 |
| Moscow | 4 |
| Cagliari | 3 |
| Florence | 2 |
| Amsterdam | 1 |