Submitted on: 13 September 2007.
Revised on: 02 November 2007.
Accepted on: 27 December 2007.
___________________Journal of African Law---CAMBRIDGE UNIV PRESS
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Submitted on: 20 December 2004.
Revised on: 02 April 2005.
Accepted on: 28 May 2005.
___________________Journal of African Law---CAMBRIDGE UNIV PRESS
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