TY  - BOOK
AU  - Swan,Michael
TI  - Basic english usage
SN  - 0194311872
U1  - 420 
PY  - 2001///
CY  - Oxford
PB  - Oxford university press
KW  - English grammar -- Spanish students
KW  - English vocabulary -- Spanish students
KW  - English language -- Study and teaching -- Foreign speakers
KW  - English language
ER  -