TY  - BOOK
AU  - Thomson,Audrey J.
AU  - Martinet, Agnes V. 
TI  - A practical English grammar
SN  - 0195620534
U1  - 425 
PY  - 1987///
CY  - Delhi
PB  - Oxford University Press
KW  - Grammar -- English.
KW  - Grammar.
ER  -