171. | | Autor: Calheiros, Francisco de | |
172. | | | |
173. | | Autor: Whitley, Robert E. | |
174. | | Autor: Frei, Xavier | |
175. | | Autor: Colenda, Cynthia A. | |
176. | | Col.autor: Congrès National des Offices de Tourisme et Syndicats d Iniciative. 1996 | |
177. | | Autor: Yodmani, Suvit | |
178. | | Autor: Ravenscroft, Neil | |
179. | | Autor: Azevedo, Delfim | |
180. | | Autor: Rodrigues, Luís Nuno | |