TY  - BOOK
AU  - Walker, Elaine
AU  - Elsworth, Steve
TI  - Grammar practice for pre- intermediate students with key
SN  - 0582417104
PY  - 2002///
CY  - Harlow, England
PB  -   Longman
KW  - Lengua inglesa
KW  - embne
KW  - Gramática
ER  -