TY  - GEN
AU  - Vyjanthimala, Balakrishna
AU  - Lum, Chiew Siew
TI  - Exploring Science 1 : Workbook 1B
SN  - 0195847660
U1  - 507 
PY  - 1982///
CY  - Singapore
PB  - Oxford University Press
KW  - Science
ER  -