Riso, Don Richard <br/><br/>
Personality Types: Using the Enneagram for Self-Discovery   

 - Boston  Houghton Mifflin Company  1987 
 - 370p 
<br/><br/><label>ISBN: </label>0395535182 
<br/><br/><label>Dewey Class. No.: </label>O99.4  / R495