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Submitted on: 18 September 2019.
Revised on: 16 October 2019.
Accepted on: 18 November 2019.
___________________Elementa-Science of the Anthropocene
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Submitted on: 27 February 2008.
Revised on: 21 March 2008.
Accepted on: 04 May 2008.
___________________Elementa-Science of the Anthropocene
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