Columbia subject headings:
Harvard subject headings:
Proto-Tai language--Phonology, Comparative.
Proto-Tai language--Phonology, Historical.
Tai languages--Dialects--China--Guangxi Zhuangzu Zizhiqu.
Tai languages--Dialects--China--Yunnan Sheng.
Princeton subject headings:
Proto-Tai language--Phonology, Comparative.
Proto-Tai language--Phonology, Historical.