TY  - BOOK
AU  - "Black, Michael"
AU  - "Sharp, Wendy"
TI  - ST - Cambridge Objective IELTS
SN  - 9780521700528
U1  - IELTS/428.43/BOY 
PY  - 2006///
CY  - UK
PB  - CUP
N1  - "Ref: 493 (1 KB021513, 1 KA091898), ref: 547 (KA091878, KB019355)"
ER  -