Jon N.Leonard. <br/><br/>
live longer now :  The first one hundred years life / 
by.Leonard,John N. 
 - New York :  Grosset and Dunlap,  c1974. 
 - p. :xx :  144. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0448122626 
<br/><br/><label>LC Class. No.: </label>RA 776  / .L57