Submitted on: 30 April 2008.
Revised on: 23 July 2008.
Accepted on: 29 August 2008.
___________________African Journal of Economic and Management Studies
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Submitted on: 28 June 2017.
Revised on: 10 August 2017.
Accepted on: 05 October 2017.
___________________African Journal of Economic and Management Studies
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Submitted on: 04 May 2000.
Revised on: 05 August 2000.
Accepted on: 11 September 2000.
___________________African Journal of Economic and Management Studies
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Submitted on: 19 February 2008.
Revised on: 14 May 2008.
Accepted on: 17 June 2008.
___________________African Journal of Economic and Management Studies