TY  - BOOK
AU  - Swan, Michael
AU  - Swan, Michael
TI  - Practical English usage / Michael Swan
SN  - 19442099
AV  - PE1106 .S94 2005 
U1  - PE1106 .S94 2005 
PY  - 2005///
CY  - Oxford
PB  - Oxford University Press
KW  - English language -- Study and teaching
ER  -