Purnell, Dick. <br/><br/>
The 31- day experiment / 
Dick Purnell. 
 - California :  Here's Life Publishers,   c1984. 
 - 63 p. ;  21 cm. 
<br/><br/><label>ISBN: </label>0898400589 
<br/><br/><label>LC Class. No.: </label>BV4811  / .P87 1984