DE BEER, Savin: Editor <br/><br/>
ENCYCLOPAEDIA OF THE ANIMAL WORLD, Volume XV: OTTER - PLATYPUS 

 -  Bay Books, Sydney   1972 
<br/><br/><label>ISBN: </label>0 85835 163 3 
<br/><br/><label>Dewey Class. No.: </label>590.03  / DEB /E