Submitted on: 21 August 1999.
Revised on: 17 October 1999.
Accepted on: 11 December 1999.
___________________INTERNATIONAL REVIEW OF HYDROBIOLOGY
Submitted on: 21 December 2002.
Revised on: 29 March 2003.
Accepted on: 17 May 2003.
___________________INTERNATIONAL REVIEW OF HYDROBIOLOGY
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Submitted on: 30 May 2005.
Revised on: 01 July 2005.
Accepted on: 02 August 2005.
___________________INTERNATIONAL REVIEW OF HYDROBIOLOGY
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Submitted on: 22 June 2000.
Revised on: 18 July 2000.
Accepted on: 24 August 2000.
___________________INTERNATIONAL REVIEW OF HYDROBIOLOGY
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