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Submitted on: 13 August 2001.
Revised on: 30 October 2001.
Accepted on: 27 November 2001.
___________________ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Submitted on: 26 April 1998.
Revised on: 19 July 1998.
Accepted on: 10 September 1998.
___________________ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Submitted on: 23 May 1998.
Revised on: 15 August 1998.
Accepted on: 22 September 1998.
___________________ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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Submitted on: 25 September 1999.
Revised on: 06 November 1999.
Accepted on: 29 December 1999.
___________________ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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