TY  - BOOK
AU  - Ruhlen, Merritt
AU  - 
TI  - The origin of language tracing the evolution of the mother tongue
SN  - 0-471-15963-8
U1  - 401 R854 1994 
CY  - Canada
PB  - John Wiley & Sons.
KW  - Human Evolution
KW  - Language and languages
KW  - Origin
KW  - Classification
N1  - Includes references & index
ER  -