Elsevier <br/><br/>
Encyclopedia of the Animal World ( Volume-4 )  : Bumblebees- Chimpanzee 
/ by Elsevier 
 - London;  Elsevier International Projects Ltd.,:  1972 
 - 384p. 
<br/><br/><label>Dewey Class. No.: </label>591.03  / ELE/E