TY  - GEN
AU  - Langacker,Ronald W.
TI  - Language and Its Structure: some fundamental linguistic concepts 
SN  - 015549192X
U1  - 410 22
PY  - 1973///
CY  - New York
PB  - Harcourt Brace Jovanovich Publishers, 
KW  - English as a language
KW  - Linguistic
N1  - includes bibliographical references and index
ER  -