Submitted on: 09 May 2006.
Revised on: 29 June 2006.
Accepted on: 08 August 2006.
___________________Environmental Earth Sciences---SPRINGER
Submitted on: 16 October 2010.
Revised on: 16 December 2010.
Accepted on: 06 February 2011.
___________________Environmental Earth Sciences---SPRINGER
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Submitted on: 06 June 2005.
Revised on: 19 September 2005.
Accepted on: 01 November 2005.
___________________Environmental Earth Sciences---SPRINGER
Submitted on: 12 March 2020.
Revised on: 01 April 2020.
Accepted on: 22 April 2020.
___________________Environmental Earth Sciences---SPRINGER
Submitted on: 05 June 2022.
Revised on: 07 August 2022.
Accepted on: 05 September 2022.
___________________Environmental Earth Sciences---SPRINGER
Submitted on: 04 January 1998.
Revised on: 09 April 1998.
Accepted on: 20 May 1998.
___________________Environmental Earth Sciences---SPRINGER
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