TY  - BOOK
AU  - Velayudhan, S
TI  - Vowel duration in malayalam: an acoustic phonetic study 
U1  - 414.8 
PY  - 1971///
CY  - Thiruvananthapuram : 
PB  - The Dravidian Linguistic Association of India, 
KW  - Phonetic study
ER  -