TY  - BOOK
AU  - Betsis,Andrew
AU  - Mamas,Lawrence
TI  - The vocabulary files: English usage, upper intermediate 
SN  - 9781904663430
PY  - 2016///]
CY  - United Kingdom
PB  - Global elt ltd
KW  - Vocabulary tests
KW  - Study guides
KW  - International English Language Testing System
KW  - English language
KW  - Examinations
ER  -