Herger, Alfred D. <br/><br/>
Supérate!  alcanzando tu excelencia 
Alfred D. Herger. 
 - Santurce, P.R.  Ediciones Prima Vida  c1995. 
 - 188 p.  21 cm. 
<br/><br/><label>ISBN: </label> 17.75 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Self-actualization (Psychology)<br/>Success<br/>Behavior modification