Columbia subject headings:
Chinese characters.
Mongolian language--Orthography and spelling.
Mongolian language--Phonology.
Secret history of the Mongols.
Harvard subject headings:
Chinese characters.
Mongolian language--Orthography and spelling.
Mongolian language--Phonology.
Princeton subject headings:
Chinese characters.
Mongolian language--Orthography and spelling.
Mongolian language--Phonology.