TY  - BOOK
AU  - Swan ,Michael
AU  - Walter ,Catherine
TI  - How English Works : : a grammar Practice Book with Answers / 
AV  - PE1128.A2 .S93 2009
PY  - 2009///
PB  - Oxford University Press , 
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Grammar
KW  - Handbooks, manuals, etc
ER  -