English and Korean.
Title preceded by the numbers 275, 276, 277.
Colophon inserted.
Reprint (1st work). Originally published: Praha : Státní Pedagogické Nakladatelství, 1952.
Reprint (2nd work). Originally published: Washington, D.C. : Korean Affairs Institute, Inc., 1944.
Reprint (3rd work). Originally published: Berkeley, Calif. : University of California, 1966.