TY  - BOOK
AU  - Swan,Michael
TI  - Practical English usage
SN  - 9780194420983
AV  - PE 1112 S972p
PY  - 2013///
CY  - Oxford: 
PB  - Oxford University Press, 
KW  - English language
KW  - usage
KW  - grammar
KW  - textbooks for foreign speakers
ER  -