Hwanʼgyŏng kwa inʼgan
By: Pak Pong-gyu chiŭm.
Publisher: Ihwa Yŏja Taehakkyo Chʻulpʻanbu
Published: 1986
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 484
Subjects: Human ecology; Pollution; Environmental protection
Notes: Includes bibliographies and indexes.