Submitted on: 06 October 2012.
Revised on: 02 February 2013.
Accepted on: 18 March 2013.
___________________Hacettepe Universitesi Egitim Fakultesi Dergisi-Hacettepe University Journal of Education
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Submitted on: 23 February 2012.
Revised on: 16 March 2012.
Accepted on: 25 April 2012.
___________________Hacettepe Universitesi Egitim Fakultesi Dergisi-Hacettepe University Journal of Education
Submitted on: 06 February 2000.
Revised on: 05 May 2000.
Accepted on: 16 May 2000.
___________________Hacettepe Universitesi Egitim Fakultesi Dergisi-Hacettepe University Journal of Education
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Submitted on: 22 May 2002.
Revised on: 15 June 2002.
Accepted on: 02 July 2002.
___________________Hacettepe Universitesi Egitim Fakultesi Dergisi-Hacettepe University Journal of Education
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Submitted on: 08 February 2003.
Revised on: 14 April 2003.
Accepted on: 28 April 2003.
___________________Hacettepe Universitesi Egitim Fakultesi Dergisi-Hacettepe University Journal of Education