TY  - BOOK
AU  - Bonifacio,Aleli A.
AU  - Panaligan,Alona
TI  - Physical science: Modules in natural science I 
SN  - 971-8581-62-6
U1  - Prof. 500.2 B715 2003 
PY  - 2003///
CY  - Philippines
PB  - Great Books Trading
KW  - Physical sciences
ER  -