TY  - BOOK
AU  - Thomson,A.J.
AU  - Martinet,A.V.
TI  - A Practical English Grammar: Exercises   1 
SN  - 9780194313490
PY  - 1986///
CY  - London :  
PB  - Oxford University Press, 
KW  - English language
KW  - Textbooks
KW  - Grammar
KW  - Textbooks for foreign speakers
ER  -