Snowdon, David. <br/><br/>
Aging with grace :  what the nun study teaches us about leading longer, healthier, and more meaningful lives / 
David Snowdon. 
 - New York :  Bantam Books,  2001. 
<br/><br/><label>ISBN: </label>0553801635 9780553801637 
<br/><br/><label>LC Class. No.: </label>SN674a 2001