Dempsey, Michael <br/><br/>
Purnell's concise dictionary of nature 

 - Purnell Books, Bristol  1984 
 - 253 
<br/><br/><label>ISBN: </label>0 361 06293 1 
<br/><br/><label>Dewey Class. No.: </label>R503 P.C.D.N.