TY  - BOOK
AU  - Breivik,Leiv Egil
AU  - Jahr,Ernst Hakon
TI  - Language change: contributions to the study of its causes 
SN  - 0899255647
PY  - 1989///
CY  - Berlin
PB  - Mouton de Gruyter
KW  - Linguistic change
N1  - p. 272-276
ER  -