TY  - BOOK
AU  - Gude,Kathy
AU  - Duckworth,Michael
TI  - Proficiency masterclass
SN  - 0194328236 (student's book)
AV  - PE1128 
U1  - 428 
PY  - 1995///
CY  - Oxford
PB  - Oxford University Press
KW  - English language
KW  - Study and teaching
KW  - Foreign speakers
KW  - Textbooks for foreign speakers
N1  - Student's book -- Teacher's book -- Workbook -- Workbook with answers
ER  -