Hwanʼgyŏng chirihak
By: Pak Tong-wŏn, Son Myŏng-wŏn kongjŏ.
Contributors: Son, Myŏng-wŏn.
Edition: Chʻopʻan
Publisher: Sŏul Taehakkyo Chʻulpʻanbu
Published: 1989
Place of publication: Sŏul
Language: kor
Number of pages: 237
Subjects: Nature -- Effect of human beings on; Pollution
Notes: Includes bibliographical references.