TY  - BOOK
AU  - Aitchison,Jean
TI  - Language change: progress or decay? 
SN  - 0521422833 (paperback)
PY  - 1991///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Linguistic change
N1  - Includes bibliographical references (p. 237-251) and index
ER  -