Uju rŭl hyanghan inʼgan ŭi kkum
By: Hong Yong-sik.
Edition: Chʻopʻan
Series: Tonga kwahak sinsŏ -- 3
Publisher: Tonga Ilbosa
Published: 1991
Place of publication: Sŏul
Language: kor
Number of pages: 242
Subjects: Astronautics; Outer space -- Exploration
Notes: Includes bibliographical references (p. 232-238) and indexes.