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Submitted on: 24 February 2012.
Revised on: 02 May 2012.
Accepted on: 23 May 2012.
___________________ENVIRONMENTAL HISTORY---UNIV CHICAGO PRESS
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Submitted on: 18 May 2008.
Revised on: 29 August 2008.
Accepted on: 24 September 2008.
___________________ENVIRONMENTAL HISTORY---UNIV CHICAGO PRESS
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Submitted on: 03 September 2001.
Revised on: 15 October 2001.
Accepted on: 25 November 2001.
___________________ENVIRONMENTAL HISTORY---UNIV CHICAGO PRESS