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2nd UNWTO International Congress on Ethics and Tourism, Quito, Ecuador, 11 and 12 September 2012 = II Congreso internacional de ética y turismo de la OMT : Quito (Ecuador) 11 y 12 de septiembre 2012.
- 174.991 U62
- UNWTO International Congress on Ethics and Tourism (2nd : 2012 : Quito, Ecuador)
- World Tourism Organization,
- c2013.
- Madrid, Spain :