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1by International Workshop on the Sahara of Cultures and People: Towards a Strategy for the Sustainable Development of Tourism in the Sahara, in the Context of Combating Poverty, Ghardaia, Algeria, 2003, World Desert Foundation, Sidi Boumedine, Rachid, Veirier, Laureprogramme and meeting document bibliotecaUNESCO
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2by International Workshop on the Sahara of Cultures and People: Towards a Strategy for the Sustainable Development of Tourism in the Sahara, in the Context of Combating Poverty, Ghardaia, Algeria, 2003, World Desert Foundation, Sidi Boumedine, Rachid, Veirier, Laureprogramme and meeting document bibliotecaUNESCO