Olsen, O. Wilford  1901- <br/><br/>
Animal parasites: their life cycles and ecology 
[by] O. Wilford Olsen. Illus. by the author. 
 - 3d ed. 
 - Baltimore,  University Park Press  [1974] 
 - xii, 562 p.  illus.  29 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0839106432 
<br/><br/><label>LCCN: </label>73017411 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Parasitology.<br/>Parasites--Life cycles.
<br/><br/><label>LC Class. No.: </label>QL757  / .O4 
<br/><br/><label>Dewey Class. No.: </label>591.5/24 
<br/><br/><label>National Library of Medicine Call No.: </label>QX4 O52a 1973