TY  - BOOK
AU  - Duckworth,Michael
AU  - Gude,Kathy
TI  - Countdown to first certificate: Workbook with key and tapescripts 
SN  - 0194533549
PY  - 1999///
CY  - Oxford
PB  - Oxford University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Grammar
KW  - Problems, exercises, etc
KW  - Certificate
ER  -