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Submitted on: 31 January 1999.
Revised on: 15 March 1999.
Accepted on: 11 April 1999.
South African Journal of Business Management
Submitted on: 03 November 2004.
Revised on: 11 November 2004.
Accepted on: 16 November 2004.
South African Journal of Business Management
Submitted on: 27 December 2000.
Revised on: 21 January 2001.
Accepted on: 02 February 2001.
South African Journal of Business Management