TY  - GEN
AU  - Campbell, Colin
AU  - Gude, Kathy
AU  - Duckworth, Michael
TI  - Matrix: pre-intermediate teacher's book 
SN  - 0194369706
AV  - TRCCTBCAM2002 CAMa
PY  - 2002///
CY  - China
PB  - Oxford University Press
KW  - English language
KW  - Textbooks for foreign speakers
ER  -