Title: Wisŏng yŏngsang ŭl iyonghan Pukhan chiyŏk ŭi haean sŭpchi yŏnʾgu
First published: 2003
Subjects: Wetlands, Remote sensing
Places: Korea (North), Pʻyŏngan-namdo
LC classification: QH87.3 .Y83 2003