TY  - BOOK
AU  - Swan,Michael .
AU  - Walter,Catherine .
TI  - How English Works: A grammer practice book 
SN  - 019431456I
AV  - PE1128 .R233 2001.
PY  - 2001///
CY  - New York, United States
PB  - Oxford University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Grammar
KW  - Handbooks, manuals, etc
N1  - With Answers
ER  -