TY  - BOOK
AU  - Swan,Michael
AU  - Walter,Catherine
TI  - How English works : : a grammar practice book with answers / 
SN  - 0194314561   
PY  - 1997///
CY  - New York
PB  - Oxford University, 
KW  - English language
KW  - Composition and exercises
KW  - Grammar
KW  - Study and teaching
N1  - Includes indexes
ER  -