Korean and Esperantʻo.
Colophon inserted.
Reprint (1st work). Originally published: Kyŏngsŏng-bu : Pangmun Sŏgwan, 1926.
Reprint (2nd work). Originally published: Kyŏngsŏng-bu : Munudang, 1925.
Reprint (3rd work). Originally published: Sŏul Tʻŭkpyŏlsi : Chosŏn Esŭpʻerantʻo Hakhoe, 1949.