TY  - BOOK
AU  - Gude, Kathy
AU  - Duckworth, Michael
TI  - Proficiency masterclass : Student's book
SN  - 0194328236
U1  - 428.2 
PY  - 1994///
CY  - Oxford
PB  - Oxford University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Study and teaching
KW  - Foreign speakers
N1  - 002493; F 063
ER  -