TY  - BOOK
AU  -  Firman, Susan.
AU  - Bosewitz., René .
TI  - Penguin students' grammar of English exercises: with answers ?
SN  - 0140809449; 9780140809442
U1  - 425 
PY  - 1988///
CY  - London
PB  -  Penguin
KW  -  English language;  English language -- Textbooks for foreign speakers.
ER  -