TY  - BOOK
AU  - Challoner,Jack
TI  - Bising dan senyap
T2  - Sains asas
SN  - 967971313X
U1  - 507 23
PY  - 1997///
CY  - Petaling Jaya, Selangor : 
PB  - Flo , 
KW  - Sound
ER  -