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United Nations Environment Programme ,  [Standing Wealth: Pastoralist Livestock Production and Local livelihoods in Sudan ] ,  Standing Wealth: Pastoralist Livestock Production and Local livelihoods in Sudan 

United Nations Environment Programme ,  [Desertification Control Number 8, June 1983] ,  Desertification Control Number 8, June 1983

United Nations Environment Programme ,  [Introducing the Camel: Basic Camel Keeping for the Beginner] ,  Introducing the Camel: Basic Camel Keeping for the Beginner