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Submitted on: 23 November 2017.
Revised on: 14 March 2018.
Accepted on: 09 May 2018.
___________________Environmental Education Research
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Submitted on: 01 August 2001.
Revised on: 06 October 2001.
Accepted on: 22 October 2001.
___________________Environmental Education Research
Submitted on: 17 December 2017.
Revised on: 24 February 2018.
Accepted on: 09 March 2018.
___________________Environmental Education Research
Submitted on: 17 July 2010.
Revised on: 06 November 2010.
Accepted on: 25 December 2010.
___________________Environmental Education Research
Submitted on: 28 October 2020.
Revised on: 30 November 2020.
Accepted on: 18 January 2021.
___________________Environmental Education Research
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Submitted on: 26 January 1998.
Revised on: 03 May 1998.
Accepted on: 24 June 1998.
___________________Environmental Education Research