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Submitted on: 06 August 1998.
Revised on: 06 October 1998.
Accepted on: 30 October 1998.
___________________AUSTRALIAN FORESTRY---TAYLOR & FRANCIS AUSTRALASIA
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Submitted on: 11 April 2014.
Revised on: 27 May 2014.
Accepted on: 28 June 2014.
___________________AUSTRALIAN FORESTRY---TAYLOR & FRANCIS AUSTRALASIA
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