TY  - BOOK
AU  - Langacker, Ronald W. 
TI  - Language and its structure: Some fundamental linguistic concepts 
SN  - 0155491911
U1  - 400 
PY  - 1968///
CY  - New York
PB  - Harcourt, brace and world Inc.
KW  - English literature
KW  - Language
ER  -