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  - 1994///
CY  - Cambridge
PB  - Cambridge University Press
KW  - INGLES
KW  - ESTUDIOS Y EJERCICIOS
KW  - ARTICULO
KW  - ENSEÑANZA
KW  - ALFABETO
KW  - ORACIONES
KW  - LEMB
ER  -