Tʻoyang chisik
By: Chŏng Yŏng-il pʻyŏnjŏ
Contributors: Chungguk Chosŏnjok Collection (Library of Congress. Asian Division. Korean Section)
Publisher: Yonyŏng Minjok Chʻulpʻansa; Yoyŏng-sŏng Sinhwa Sŏjŏm parhaeng
Published: 1983
Place of publication: Simyang
Language: kor
Number of pages: 181
Subjects: Soils
Other titles: Tu rang zhi shi