TY  - BOOK
AU  - Koh, Andy
AU  - Goh, Valerie
TI  - Earth our home
T2  - Secondary 1  : 
SN  - 9789810175542
AV  - G128 
U1  - 910 
PY  - 2006///
CY  - New York
PB  - Marshall Cavendish Education
ER  -