Business and conference tourism in the european economic area : final report / ed. Horwath Axe Consultants
COTA(S): 6639
European Union travel & tourism : towards 1996 and beyond / World Travel & Tourism Council
COTA(S): 7557
Informação económica / Direcção de Serviços de Macroeconomia e Planeamento
COTA(S): RP-1311