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Submitted on: 14 July 2014.
Revised on: 31 August 2014.
Accepted on: 01 October 2014.
___________________Agricultural and Food Economics
Submitted on: 23 March 2018.
Revised on: 05 July 2018.
Accepted on: 24 August 2018.
___________________Agricultural and Food Economics
Submitted on: 19 March 2001.
Revised on: 06 May 2001.
Accepted on: 05 July 2001.
___________________Agricultural and Food Economics
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Submitted on: 29 May 2018.
Revised on: 10 July 2018.
Accepted on: 01 September 2018.
___________________Agricultural and Food Economics
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Submitted on: 26 June 2003.
Revised on: 02 September 2003.
Accepted on: 15 September 2003.
___________________Agricultural and Food Economics
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