TY  - BOOK
AU  - Aitchinson, J.
TI  - Language change : progress or decay ?
SN  - 521422833
U1  - 417.7 
PY  - 1991///
CY  - Cambridge [England] ; New York
PB  - Cambridge University Press ELT
KW  - Linguistic change
N1  - 000134; CH 134
ER  -