By Roba Hassan G.   Oba Gufu   in The International Journal of Sustainable Development and World Ecology

ISSN:1350-4509|15|3|251-264

Taylor & Francis Ltd‎(2008)‎

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By Hertkorn Marie-Luise   Roba Hassan   Kaufmann Brigitte   in Nomadic Peoples

ISSN:1752-2366|19|1|30-52

Berghahn Journals‎(2015)‎

Access to resources Favorite 10.979907