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Submitted on: 23 July 1999.
Revised on: 27 August 1999.
Accepted on: 03 September 1999.
WILDLIFE RESEARCH
Submitted on: 18 November 2007.
Revised on: 16 December 2007.
Accepted on: 25 December 2007.
WILDLIFE RESEARCH---CSIRO PUBLISHING
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Submitted on: 19 October 2000.
Revised on: 08 November 2000.
Accepted on: 20 November 2000.
WILDLIFE RESEARCH---CSIRO PUBLISHING
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