21-segi pʻyŏnghwahak
By: Ha Yŏng-sŏn pʻyŏn.
Contributors: Ha, Yŏng-sŏn.
Edition: Chʻopʻan
Publisher: Pʻulpit
Published: 2002
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 518
Subjects: Peace.; Security, International.
Other titles: Isibil segi pʻyŏnghwahak
Notes: Includes bibliographical references.