Customary commerce :
Kerven, Carol.
Customary commerce : a historical reassessment of pastoral livestock marketing in Africa Carol Kerven. - London: Overseas Development Institute, 1992. - 119 pages - ODI agricultural occasional paper ; .
Customary commerce : a historical reassessment of pastoral livestock marketing in Africa Carol Kerven. - London: Overseas Development Institute, 1992. - 119 pages - ODI agricultural occasional paper ; .