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Submitted on: 19 December 2012.
Revised on: 07 March 2013.
Accepted on: 23 March 2013.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
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Submitted on: 01 November 2020.
Revised on: 28 February 2021.
Accepted on: 12 March 2021.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
Submitted on: 23 October 2016.
Revised on: 18 January 2017.
Accepted on: 28 January 2017.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
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Submitted on: 28 May 2012.
Revised on: 20 August 2012.
Accepted on: 28 September 2012.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
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