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Submitted on: 05 March 2002.
Revised on: 30 April 2002.
Accepted on: 07 June 2002.
___________________International Journal of Assessment Tools in Education
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Submitted on: 31 August 2014.
Revised on: 30 November 2014.
Accepted on: 29 December 2014.
___________________International Journal of Assessment Tools in Education
Submitted on: 27 July 1998.
Revised on: 30 August 1998.
Accepted on: 01 October 1998.
___________________International Journal of Assessment Tools in Education