PH.D.SELIGMAN,E.P.MARTIN. <br/><br/>
LEARNED OPTIMISM / 
MARTIN E.P.SELIGMAN,PH.D. 
 - NEW YORK ;  FREE PRESS,  1990. 
 - 319 P. ;  8.4X5.4 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>155.232  / MAR