Divirta-se a viajar comigo / Elisabete Almeida
Study on visa facilitation in the silk-road countries / World Tourism Organization
WTO, UNESCO, APTEC - silk road travel forum on how to source Japan - a major tourist market for the silk road, Kyoto, Japan, 21 February 1998 / World Tourism Organization
Silk road tourism - current issues : a report on the third international meeting on the silk road, Tbilisi, Georgia, 2-5 November 1998 / World Tourism Organization
WTO silk road forum, Xi'an, China, 17-20 June 1996 : final report / World Tourism Organization
Silk road : discover an ancient land / World Tourism Organization