TY  - BOOK
AU  - Swan, Michael , 1936-
AU  - Walter, Catherine , 1946-
TI  - How English works : a grammar practice book : with answers
SN  - 0194314561
AV  - PE1128.S933 1997 
PB  - Oxford University Press
KW  - English language - Textbooks for foreign speakers
KW  - PE
N1  - 14th impression 2004; Includes index
ER  -