Tourism 2020 vision : Americas / World Tourism Organization
COTA(S): 8341-II
Tourism 2020 vision : East Asia and the Pacific / World Tourism Organization
COTA(S): 8341-III
L' activité des croisières dans le monde / World Tourism Organization
COTA(S): 9308
Cruise Tourism : Current situation and trends / World Tourism Organization
COTA(S): 12667; 12667-Dg