Park, Sang-kyu (朴相圭) <br/><br/>
행복수업 = Happiness class :  becoming a manager of your own emotions / 
Sangkyu Park. 
 - Seoul:  Hakji Branch,  2020. 
 - 261 p. ;  23 cm. 
<br/><br/>References included. 
<br/><br/><label>ISBN: </label>9788999721014 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology<br/>Happiness
<br/><br/><label>Dewey Class. No.: </label>158