Sin chepʻum kaeballon
By: Kim Wŏn-su chŏ
Edition: Chʻopʻan
Publisher: Kyŏngmunsa
Published: 1991
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 334
Subjects: New products; Commercial products; Technological innovations
Notes: Includes bibliographical references (p. 321-325) and indexes.