TY  - BOOK
AU  - Murphy,Raymond
TI  - Essential grammar in use : : a self-study reference and practice book for elementary students of English with answer 
SN  - 9780521675437
AV  - PE 1112  M87E 2012
PY  - 2012///
CY  - Cambridge : 
PB  - Cambridge University Press, 
KW  - English language
KW  - Grammar
KW  - Problems, exercises, etc
KW  - Textbooks for foreign speakers
ER  -