Kojŏngchʻŭng hyŏmgisŏng sŭllŏtchi rŭl iyonghan punnyo chʻŏri e kwanhan yŏnʼgu
Subtitle: sŏksa hagwi nonmun
By: Yi Chʻan-gi.
Publisher: s.n.]
Published: 1975
Place of publication: [S.l
Language: kor
Number of pages: 55
Subjects: Sewage -- Purification -- Activated sludge process; Anaerobic bacteria
Notes: Cover title.

Thesis (M.S.)--Koryŏ Taehakkyo, 1975.

Includes bibliographical references (leaves 43-45).

In Korean with abstract in English.