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    Nadir Ahmed Elagib, Development and application of a drought risk index for food crop yield in Eastern Sahel, Ecological Indicators, 2014, 43, 114

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    Bibliography, Center for Migration Studies special issues, 1996, 13, 3
  3. 3
    Hassan Ahmed Abdel Ati, The Development Impact of NGO Activities in the Red Sea Province of Sudan: A Critique, Development and Change, 1993, 24, 1