웃는연습
Subtitle: Pak Sŏng-u sijip
Edition: Ch'op'an.
Series: Ch'angbi sisŏn -- 413
Publisher: Ch'angbi
Published: 2017
Place of publication: Kyŏnggi-do P'aju-si
Language: kor
Number of pages: 129
ISBN-13: 9788936424138
Other titles: Unnŭn yŏnsŭp
Work titles: Poems