21-segi tʻamgu
Subtitle: mul, enŏgi, kyotʻong, hwanʼyŏng, kŏnsŏl
By: Chŏngam Chʻoe Yŏng-bak chŏ.
Edition: Chʻopʻan
Publisher: Kumi Sŏgwan
Published: 1992
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 529
Subjects: Regional planning -- Forecasting; Technological forecasting
Other titles: Isibil segi tʻamgu.