Wŏnso ŭi kajok
By: Chŏng Yŏng-il
Contributors: Chungguk Chosŏnjok Collection (Library of Congress. Asian Division. Korean Section)
Publisher: Yonyŏng Minjok Chʻulpʻansa; Yoyŏng-sŏng Sinhwa Sŏjŏm parhaeng
Published: 1988
Place of publication: Simyang
Language: kor
Number of pages: 266
Subjects: Chemical elements
Other titles: Yuan su de jia zu