TY  - BOOK
AU  - Jespersen, Otto
TI  - Language: its nature, development and origin
U1  - 400 
PY  - 1954///
CY  - London
PB  - Allen & Unwin
KW  - development of languages
KW  - Lingustics
KW  - language science
KW  - Language acquisition
KW  - language change
ER  -