Title: Chŏngsŏn pangŏn ŭi sŏngjo ch'egye wa kŭ yŏksajŏk pyŏnch'ŏn
Subjects: Phonology, Tone, Historical Grammar, Dialects, Korean Language, Korean language
Places: Korea (South), Chŏngsŏn-gun
Time periods: Middle Korean, 935-1500