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Submitted on: 18 August 2011.
Revised on: 24 September 2011.
Accepted on: 27 October 2011.
___________________International Journal of Special Education
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Submitted on: 09 February 2006.
Revised on: 26 May 2006.
Accepted on: 06 July 2006.
___________________International Journal of Special Education
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Submitted on: 13 December 2019.
Revised on: 10 March 2020.
Accepted on: 23 March 2020.
___________________International Journal of Special Education
Submitted on: 31 October 1999.
Revised on: 30 January 2000.
Accepted on: 16 March 2000.
___________________International Journal of Special Education
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