TY  - BOOK
AU  - Murphy, Raymond
AU  - Naylor, Helen.
TI  - Essential grammar in use: a self-study reference and practice book for elementary students of English 
SN  - 9780521675802
PY  - 2007///
CY  - Cambridge
PB  - Cambridge University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Grammar Problems, exercises, etc
KW  - Problems, exercises, etc
KW  - Libros electrónicos
N1  - Includes index; Accompanied by CD-ROM entitled: Essential grammar in use CD-ROM / Helen Naylor with Raymond Murphy; Plan de Estudios para la Enseñanza del Inglés en la Educación Básica General
UR  - https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=6f6dc7ac7b12ea1752ed2e2b1d03e6b0
ER  -