| 1. | Travel & tourism in the world economy : the WTTC report / World Travel & Tourism CouncilData Publicação: 1991 Col.autor: World Travel & Tourism Council COTA(S): 4954.1 |  | |
| 2. | Travel & tourism : the WTTC report / World Travel & Tourism CouncilData Publicação: 1992 Col.autor: World Travel & Tourism Council COTA(S): 4954.2 | | |
| 3. | Travel & tourism : a new economic perspective / World Travel & Tourism CouncilData Publicação: 1993 Col.autor: World Travel & Tourism Council COTA(S): 4954.3.1; 4954.3.1-A; 4954.3.2; 4954.3.3 | | |
| 4. | Travel & tourism : progress and priorities 1994 / World Travel & Tourism CouncilData Publicação: 1994 Col.autor: World Travel & Tourism Council COTA(S): 4954.4 | | |
| 5. | Travel & tourism : a new economic perspective / World Travel & Tourism CouncilData Publicação: 1995 Col.autor: World Travel & Tourism Council COTA(S): 4954.5 | | |