Hayflick, Leonard. <br/><br/>
How and why we age / 
Leonard Hayflick ; With a foreword by Robert N. Butler. 
 - 1st ed. 
 - New York :  Ballantine Books,  1994. 
 - xxii, 377 p. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 343-359) and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aging--Popular works.<br/>Aging--Physiological aspects.