Title: Kangjŏng p'yŏnghwa sŏsin
Subjects: Diaries, Correspondence, Imprisonment, Facilities, Environmental conditions, Navy-yards and naval stations, Environmental protection, Environmentalists, Ecology, Environmental aspects, Korea (South). Haegun, Korea (South)
Places: Cheju Island (Korea), Korea (South), Cheju Island
People: Kang-ho Song, Chŏng Kyŏng-su Pak