TY  - ADVS
AU  - black، michael
AU  - capel، annette
TI  - cambridge objective ielts
PY  - 2006///
CY  - Cambridge
PB  - Cambridge University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Examinations, questions, etc
KW  - International English Language Testing System
ER  -