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Submitted on: 22 May 2000.
Revised on: 17 September 2000.
Accepted on: 08 November 2000.
___________________INTERNATIONAL JOURNAL OF SPELEOLOGY
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Submitted on: 05 August 2008.
Revised on: 21 October 2008.
Accepted on: 03 November 2008.
___________________INTERNATIONAL JOURNAL OF SPELEOLOGY
Submitted on: 05 February 2007.
Revised on: 16 April 2007.
Accepted on: 06 June 2007.
___________________INTERNATIONAL JOURNAL OF SPELEOLOGY
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Submitted on: 13 February 2019.
Revised on: 04 April 2019.
Accepted on: 13 May 2019.
___________________INTERNATIONAL JOURNAL OF SPELEOLOGY