TY  - BOOK
AU  - Murphy, Raymond
TI  - Essential grammar in use: a self-study reference and practice book for elementary learners of English : with answers and interactive eBook 
SN  - 9781107480537
AV  - PE1128 .M87
PY  - 2015///
CY  - Cambridge
PB  - Cambridge University Press
KW  - InglÃ©s -, InglÃ©s -
KW  - gramÃ¡tica, libro para extranjeros
N1  - Includes eBook with audio
ER  -