TY  - BOOK
AU  - Gaytero, Reynaldo B.
TI  - Powerful mathematics shortcuts and techniques in multiplication: (30 techniques), for all levels and for all times. 
SN  - 971-91750-0-1
AV  -  QA 115  .G257 1996
PY  - 1996///
CY  - [s.l.]
PB  - [s.n.]
KW  - Multiplication
ER  -