TY  - GEN
AU  - Murphy , Raymond
TI  - Essential grammar in use: a reference and practice book for elementary students of english
SN  - 0521357713
U1  - 425 
PY  - 1990///
CY  - Cambridge
PB  - University Press
KW  - ESSENTIAL GRAMMAR
KW  - ENGLISH
KW  -  ENGLISH GRAMMAR
ER  -