TY  - BOOK
AU  - Gude,Kathy
AU  - Duckworth,Michael
TI  - Proficiency Masterclass: Student's book 
SN  - 0194329127
PY  - 2002///
CY  - Oxford
PB  - Oxford University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Examinations
KW  - Study guides
ER  -