TY  - BOOK
AU  - Coe,Norman
AU  - Paterson, Ken
AU  - Harrison,  Mark
TI  - Grammar spectrum 3. Intermediate
SN  - 9780194314152
U1  - 420.1 
PY  - 1995///
CY  - México
PB  - Oxford University Press
KW  - INGLES COMERCIAL
KW  - INGLES
N1  - Incluye figuras; Present simple.-- Present continuous.-- Present simple (I work) orpresent continuous (I´m working).-- Verbs not used in continuous tenses.-- Past simple (I walked)
ER  -