TY  - BOOK
AU  - Swan,Michael
AU  - Walter,Catherine
TI  - How English works: a grammar practice book (with answers) 
SN  - 9780194314565 (pbk.)
U1  - 428.24 
PY  - 1997///
CY  - Oxford
PB  - Oxford University Press
KW  - English language
KW  - Textbooks for foreign speakers
N1  - Includes index; Introduction. - Test yourself. - Test yourself: answers. - Explanations and exercises: list of sections. - Phonetic alphabet. - Explanations and exercises. - Answers to exercises
ER  -