Sŏ, Chʻang-nam. Neip kʻŭroba : Sŏ Chʻang-nam sisŏn. Title in English on p. [4] of cover: Four leaves clover - [Seoul] : Munwŏnsa, 4293 [1960] - 149 p. ; 19 cm. Colophon inserted. LCCN: k 67000288 LC Class. No.: PL992.74.C38 / N4