TY  - BOOK
AU  - Doff, Adrian
AU  - Christopher, Jones
TI  - Language in use : pre-intermediate : classroom book
SN  - 0-521-37851-6
CY  - Cambridge
KW  - /LINGUISTICA/INGLES-ESTUDIO Y ENSEÑANZA; LIBROS DE TEXTO/REVISADO
N1  - Includes references section p. 130-143
ER  -