31. | | Autor: Ravenscroft, Neil | |
32. | | Autor: Azevedo, Delfim | |
33. | | Autor: Rodrigues, Luís Nuno | |
34. | | Autor: Stoffel, Ana Mercedes | |
35. | | Autor: Cossons, Neil | |
36. | | Autor: Griffin, Jonathan | |
37. | | Data Publicação: [1997] Col.autor: European Hotels Environment Forum Co col. autor: International Hotels Environmental Initiative Avillez | |
38. | | Autor: Simon, Rosalyn M. | |
39. | | Autor: Bernard-Gélabert, Marie-Christine Coautor: ; Claeys, Franck Brémond, Christinne Noyé, Christophe | |
40. | | Autor: Cavaco, Carminda | |