TY  - BOOK
AU  - Swan, Michael
AU  - Swan, Michael
TI  - Practical english usage:   easier, faster reference    
SN  - 9780194420983
AV  - 420 
U1  - 420 SWA PE1106 .S94 2005 
PY  - 2005///
CY  - Oxford university press
PB  - New York
KW  - ENGLISH
ER  -