What does PTB stand for?
PTB stands for "Proto-Tibeto-Burman"
How to abbreviate "Proto-Tibeto-Burman"?
"Proto-Tibeto-Burman" can be abbreviated as PTB
What is the meaning of PTB abbreviation?
The meaning of PTB abbreviation is "Proto-Tibeto-Burman"
What does PTB mean?
PTB as abbreviation means "Proto-Tibeto-Burman"
