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Submitted on: 03 May 2011.
Revised on: 27 June 2011.
Accepted on: 20 August 2011.
___________________CLIMATIC CHANGE---SPRINGER
Submitted on: 26 May 2001.
Revised on: 24 July 2001.
Accepted on: 14 August 2001.
___________________CLIMATIC CHANGE---SPRINGER
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