Hwanʼgyŏnghak kaeron
By: Wŏn Ik-hwan ... [et al.] kongpʻyŏn.
Contributors: Wŏn, Ik-hwan.
Publisher: Kyohaksa
Published: 1982
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 542
Subjects: Nature; Ecology; Natural resources; Pollution
Notes: Includes index.