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Submitted on: 21 December 2006.
Revised on: 27 January 2007.
Accepted on: 05 March 2007.
___________________Biosemiotics---SPRINGER
Submitted on: 27 July 2011.
Revised on: 04 November 2011.
Accepted on: 24 December 2011.
___________________Biosemiotics---SPRINGER
Submitted on: 01 May 2011.
Revised on: 24 May 2011.
Accepted on: 22 June 2011.
___________________Biosemiotics---SPRINGER
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Submitted on: 17 April 2018.
Revised on: 03 July 2018.
Accepted on: 08 August 2018.
___________________Biosemiotics---SPRINGER
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Submitted on: 16 August 1998.
Revised on: 11 December 1998.
Accepted on: 15 January 1999.
___________________Biosemiotics---SPRINGER