Langman, Rodney E. <br/><br/>
The immune system :  evolutionary principles guide our understanding of this complex biological defense system / 
Rodney E. Langman ; with a foreword by Melvin Cohn. 
 - San Diego :  Academic Press,  1989. 
 - xlvi, 209 p. :  ill. ;   24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>012436585X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Immune system--Evolution<br/>Immune System<br/>Immunity
<br/><br/><label>LC Class. No.: </label>QW504 
<br/><br/><label>Dewey Class. No.: </label>616.079