TY  - BOOK
AU  - Gaytero,Reynaldo B.
TI  - Powerful mathematics shortcuts and techniques in multiplication: for all levels and for all times 
SN  - 9719175001
U1  - Fil. 512 G288 1996 
PY  - 1996///
CY  - [Philippines]
PB  - [s.n.]
KW  - Number theories
ER  -