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Submitted on: 24 September 2022.
Revised on: 18 December 2022.
Accepted on: 31 January 2023.
___________________INTERNATIONAL REGIONAL SCIENCE REVIEW
Submitted on: 23 December 2013.
Revised on: 12 February 2014.
Accepted on: 08 April 2014.
___________________INTERNATIONAL REGIONAL SCIENCE REVIEW
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http://reply.papertrans.cn/2/144/14374/14374-25.png
Submitted on: 26 August 2018.
Revised on: 28 November 2018.
Accepted on: 29 December 2018.
___________________INTERNATIONAL REGIONAL SCIENCE REVIEW
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http://reply.papertrans.cn/2/144/14374/14374-29.png
Submitted on: 15 November 2009.
Revised on: 26 January 2010.
Accepted on: 20 February 2010.
___________________INTERNATIONAL REGIONAL SCIENCE REVIEW