Title: Ohangchʻŏn, Chogyochʻŏn hachʻŏn chŏngbi kibon kyehoek
Subjects: Stream restoration, Mathematical models, Stream conservation
Places: Korea (South), Ohangchʻŏn, Chogyochʻŏn, Ohangchʻŏn (Korea), Chogyochʻŏn (Korea)