Barth, Robert H. <br/><br/>
Invertebrate world 

 - Philadelphia  Saunders College Publishing  1982 
 - ix,646p. 
<br/><br/><label>ISBN: </label> USD 15.50 
<br/><br/><label>Source: </label> USD 15.50 
<br/><br/><label>Dewey Class. No.: </label>592 BAR