TY  - BOOK
AU  - Swan,Michael
TI  - Practical english usage 
SN  - 9780195679892
AV  - PE1106 .S94 1981
U1  - 428.2 22
PY  - 2005///
CY  - New York 
PB  - Oxford University Press
KW  - English language
KW  - Usage
ER  -