Submitted on: 09 January 2008.
Revised on: 22 April 2008.
Accepted on: 03 June 2008.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
Submitted on: 24 February 2018.
Revised on: 08 April 2018.
Accepted on: 08 May 2018.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
Submitted on: 03 January 2002.
Revised on: 26 March 2002.
Accepted on: 23 May 2002.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
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Submitted on: 04 October 2003.
Revised on: 28 December 2003.
Accepted on: 26 January 2004.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
Submitted on: 24 May 2018.
Revised on: 28 August 2018.
Accepted on: 20 October 2018.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
Submitted on: 11 February 2014.
Revised on: 15 April 2014.
Accepted on: 20 May 2014.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
Submitted on: 12 April 2019.
Revised on: 25 June 2019.
Accepted on: 13 July 2019.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS
http://reply.papertrans.cn/2/116/11558/11558-29.png
Submitted on: 26 February 1998.
Revised on: 15 May 1998.
Accepted on: 29 June 1998.
___________________HUMAN ECOLOGY---SPRINGER/PLENUM PUBLISHERS