HEGNER, Robert W. <br/><br/>
Invertebrate zoology / 
[by] Robert W. Hegner, Joseph G. Engemann 
 - 2nd ed. 
 - New York  Macmillan pub.  1968 
 - xviii, 619 p. 
<br/><br/> Includes references & index. 
<br/><br/><label>ISBN: </label>45620 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invertebrates
<br/><br/><label>Dewey Class. No.: </label>592  / HEG