TY  - BOOK
AU  - Biber, Douglas
TI  - Variation across speech and writing
SN  - 0521425565
U1  - 001.54 
PY  - 1991///
CY  - Cambridge ; New-York ; Port Chester
PB  - Oxford University Press
KW  - English language
KW  - linguistics
KW  - Written communication
N1  - 001068; I 016
ER  -