TY  - GEN
AU  - Thomos, A.J.
AU  - Thomson,A.J.
AU  - Martinet,A.V.
TI  - A practical English grammar : exercises 1
SN  - (978)+0194421228
U1  - 425 
PY  - 1986///
CY  - Oxford
PB  - Oxford University Press
KW  - English grammer
KW  - Indirect speech and passive voice
KW  - Future and conditional tenses
ER  -