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Submitted on: 30 October 1998.
Revised on: 27 February 1999.
Accepted on: 28 March 1999.
___________________International Journal of Mechanical Engineering Education
Submitted on: 15 August 2015.
Revised on: 28 November 2015.
Accepted on: 09 January 2016.
___________________International Journal of Mechanical Engineering Education
Submitted on: 17 August 2018.
Revised on: 24 November 2018.
Accepted on: 21 December 2018.
___________________International Journal of Mechanical Engineering Education
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Submitted on: 17 November 2011.
Revised on: 20 February 2012.
Accepted on: 19 April 2012.
___________________International Journal of Mechanical Engineering Education
Submitted on: 03 December 2003.
Revised on: 23 January 2004.
Accepted on: 22 February 2004.
___________________International Journal of Mechanical Engineering Education
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Submitted on: 01 August 2005.
Revised on: 29 September 2005.
Accepted on: 20 October 2005.
___________________International Journal of Mechanical Engineering Education