Submitted on: 08 October 2015.
Revised on: 26 December 2015.
Accepted on: 23 February 2016.
___________________ANTARCTIC SCIENCE---CAMBRIDGE UNIV PRESS
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Submitted on: 11 April 2009.
Revised on: 23 July 2009.
Accepted on: 09 September 2009.
___________________ANTARCTIC SCIENCE---CAMBRIDGE UNIV PRESS
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Submitted on: 19 April 2002.
Revised on: 31 July 2002.
Accepted on: 13 August 2002.
___________________ANTARCTIC SCIENCE---CAMBRIDGE UNIV PRESS
Submitted on: 25 October 2016.
Revised on: 27 December 2016.
Accepted on: 29 January 2017.
___________________ANTARCTIC SCIENCE---CAMBRIDGE UNIV PRESS
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Submitted on: 22 December 2015.
Revised on: 08 February 2016.
Accepted on: 30 March 2016.
___________________ANTARCTIC SCIENCE---CAMBRIDGE UNIV PRESS
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