TY  - BOOK
AU  - Seidl,Jennifer
AU  - Swan,Michael
TI  - Basic english usage exercises. Without key
SN  - 9780194311892
U1  - 420.1 
PY  - 1987///
CY  - México
PB  - Oxford University Press
KW  - INGLES COMERCIAL
KW  - INGLES
N1  - Incluye figuras; About to.-- Above and over.-- Across, over through
ER  -