TY  - BOOK
AU  - Liebrman Philip
TI  - On the origins of language :  an introduction to the evolution of human speech
T2  - Macmillan series in physical anthropology
U1  - Pv, L51 
PY  - 1975///
CY  - New York
PB  - Macmillan      
KW  - LINGUISTICS
N1  - Bib 183-89p
ER  -