Bibliography:
 

Leon Costermans, Native Trees and shrubs of South-Eastern Australia, RIGBY PUBLISHERS LTD 1981
 

Mary E. White, The Greening of Gondwana, KANGAROO PRESS 1998
 

Richard Allan & Tracey Greenwood, Yeasr 11 Biology 1999, BIOZONE LEANING MEDIA LTD 1998
 

Judith Kinnear & Marjory Martin,  Book One - Nature of Biology, JACARANDA WILEY LTD 1992
 

The Complete Platypus -  http://freespace.virgin.net/g.agnew/index.html