TY  - BOOK
AU  - Calderon, Jose F.
TI  - Basic mathematics 1
SN  - 971858109X
U1  - Fil. 510 C127 
PY  - 1994///
CY  - Quezon City
PB  - Great Books Trading
KW  - Mathematics
KW  - Decimal system
KW  - Ratio and proportion
ER  -