TY  - BOOK
AU  - Howie, John Mashall.
TI  - Acoustical studies of mandarin vowela and tones / 
SN  - 0 521 20732 0
U1  - P41,11:g 
CY  - CAmbridge : 
PB  - Cambridge University Press.
KW  - Linguistic<Principal Allophones>
ER  -