Seongbyeon cheukhu danja 성변측후단자(星變測候單子)
RO : Seongbyeon cheukhu danja MC : Sŏngbyŏn ch’ŭk’u tanja
Year : ?-?
Categories : Scholarship·Science and Technology>Natural Sciences
RT :
Danja Seongbyeon
BT :
Cheonmunhak