| 21. | Allocution / Francesco FrangialliAutor: Frangialli, Francesco |  | |
| 22. | Ecotourism: the key to sustainable development / Francesco FrangialliAutor: Frangialli, Francesco | | |
| 23. | Opening remarks / Francisco FrangialliAutor: Frangialli, Francesco Data Publicação: 2005 COTA(S): 10753.01 | | |