Young, J. Z. <br/><br/>
The life of vertebrates / 
by J.Z. Young. 
 - 2nd ed. 
 - New York :  Oxford University Press,  1962. 
 - xv, 820 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vertebrates.<br/>Evolution.<br/>Paleontology.