TY  - BOOK
AU  - Betsis,Andrew
AU  - Haughton,Sean
TI  - The vocabulary files: CEFR level C2 proficiency 
SN  - 9781781640968
PY  - 2013///], ©2013
CY  - United Kingdom
PB  - Global ELT
KW  - Vocabulary
KW  - Study and teaching
KW  - Ability testing
ER  -