Columbia subject headings:
Harvard subject headings:
Korean language--Middle Korean, 935-1500--Phonology.
Korean language--Writing--Idu.
Sun, Mu, active 12th century. Ji lin lei shi.
Princeton subject headings:
Korean language--Middle Korean, 935-1500--Phonology.
Korean language--Writing--Idu.
Sun, Mu, active 12th century. Ji lin lei shi.