Submitted on: 03 August 2021.
Revised on: 27 September 2021.
Accepted on: 09 October 2021.
___________________INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION
Submitted on: 28 October 2010.
Revised on: 15 January 2011.
Accepted on: 26 January 2011.
___________________INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION
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Submitted on: 04 July 2009.
Revised on: 05 October 2009.
Accepted on: 01 December 2009.
___________________INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION
http://reply.papertrans.cn/2/134/13376/13376-26.png
Submitted on: 01 July 2018.
Revised on: 17 September 2018.
Accepted on: 28 October 2018.
___________________INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION
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Submitted on: 02 November 2001.
Revised on: 14 December 2001.
Accepted on: 15 January 2002.
___________________INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION