TY  - BOOK
AU  - Bush Clara N
TI  - Phonetic variation and acoustic distinctive features :  a study of four general Ameruican fricatives
T2  - Janua lkinguarum series practica ed by Cornelis H Van Schooneveld; 12
U1  - P:1, K41 
PY  - 1964///
CY  - London
PB  - Mouton and Co UK    
KW  - LINGUISTICS
ER  -