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United Nations Environment Programme ,  Arab Center for the Studies of Arid Zones and Dry Lands ,  [The Arabian Deserts: The Everlasting Giving and the Challenge of Desertification] ,  The Arabian Deserts: The Everlasting Giving and the Challenge of Desertification

United Nations Environment Programme ,  [Combating Desertification in the USSR: Problems and Experience] ,  Combating Desertification in the USSR: Problems and Experience

Convention on Biological Diversity ,  United Nations Environment Programme ,  [Pan-African Action Agenda on Ecosystem Restoration for Increased Resilience] ,  Pan-African Action Agenda on Ecosystem Restoration for Increased Resilience