Fredrickson, Barbara <br/><br/>
Positivity: top-notch research reveals the upward spiral that will change your life 
by Barbara Fredrickson 
 - New York:   Crown Publishers  2009 
 - 277p., app., note., ind.  20 cm x 13 cm 
<br/><br/><label>ISBN: </label>9780307393746 
<br/><br/><label>Subjects--Topical Terms: </label><br/>positive psychology
<br/><br/><label>Dewey Class. No.: </label>158.1  / FRE