Buchsbaum, Ralph <br/><br/>
Animals without back bones 

 -  Penguin book  1938 
 - 401p.,  17 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arthropods <br/>Insect
<br/><br/><label>Universal Decimal Class. No.: </label>592  / BUC