Title: Dȯrvȯlzhin u̇sgiĭn tukhaĭ dȯrvȯn zu̇ĭl
Description: Four studies on the 'Phags-pa alphabet as used in writing Tibetan and Mongolian.
Subjects: 'Phags-pa alphabet, Tibetan language, Alphabet, Mongolian language
Time periods: Middle Mongolian, 13th-16th centuries