TY  - BOOK
AU  - Murphy,Raymond
TI  - Essential grammar in use: A self-study reference and practice book for elementary students of English : With answers 
SN  - 0521357705
PY  - 1990///
CY  - Cambridge, Mass.
PB  - University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Grammar
KW  - Problems, exercises, etc
ER  -