Krutch, Joseph Wood, <br/><br/>
The great chain of life/ 
Joseph Wood Krutch, 
 - Boston,  Houghton Mifflin,  1956 
 - 227 p.  illus.  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal behavior.
<br/><br/><label>LC Class. No.: </label>QL751 .K87 1956