| 1. | Environmental Management in Hotel Units of the Province of Huelva (Spain)Autor: Vargas Sánchez, Alfonso; Soto Camacho, Elena García; Vaca Acosta, Rosa María COTA(S): RP-1786 |  | |
| 2. | ToPortugal magazine / Rui CupidoAutor: Cupido, Rui Data Publicação: 2007 COTA(S): 16442 |  | |