Hayflick, Leonard. <br/><br/>
How and why we age / 
Leonard Hayflick ; with a foreword by Robert N. Butler. 
 - 1st trade pbk. ed. 
 - New York :  Ballantine Books,  1996. 
 - xxxii, 377 p. :  ill. ;  21 cm. 
<br/><br/>Includes bibliographical references (p. 343-359) and index. 
<br/><br/><label>ISBN: </label>0345401557 (pbk.) :  $14.00 ($19.50 Can.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aging.<br/>Aging--Physiological aspects.