Challenges and responsabilities for a planet in transition : Proccedings of the World Humanities Conference, Liège, Belgium, 6-11 August, 2017. / CIPSH e UNESCO
La Guía Michelin - España et Portugal : 2018 / Michelin Travel Partner
O valor económico da Distribuição Turística em Portugal / Ernst & Young / Augusto Mateus e Associados
Tourism and the environment : Towards a reporting mechanism in Europe / ETC/ULS
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