Na nŭn kŭngjŏng simnihak ŭl kŭngjŏng hal su pakke ŏpta
By: Yi Ŭl-sang
Edition: Ch'op'an
Series: Haengbok ch'ongsŏ; Haengbok ch'ongsŏ
Publisher: K'ŏmyunik'eisyŏn Puksŭ
Published: 2018
Place of publication: Sŏul-si
Language: kor
Number of pages: 151
ISBN-13: 9791128812132
Subjects: Positive psychology; Happiness
Notes: Includes bibliographical references.