Young, J. Z.  1907-1997. <br/><br/>
The life of vertebrates. 
J.Z Young 
 - Oxford,  Clarendon Press,  1950. 
 - xv, 767 pages .  illustrations.  23 cm. 
<br/><br/>includes index 
<br/><br/><label>LCCN: </label>51009113  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vertebrates.<br/>Vertebrates, Fossil.
<br/><br/><label>LC Class. No.: </label>Q 605  / .Y6 1981