TY  - BOOK
AU  - Murphy, Raymond
AU  - Murphy, Raymond
TI  - Essential grammar in use :  a self-study reference and practice book for elementary students of English with answers / Raymomd Murphy.    
SN  - 9780521675444
AV  - PE1128 .M777 2007 
U1  - PE1128 .M777 2007 
PY  - 2007///
PB  - Cambridge : Cambridge University press
ER  -