TY  - BOOK
AU  - Cutler, Ann
AU  - McShane, Rudolph
TI  - The Trachtenberg speed system of basic mathematics
AV  - QA 115 C99
PY  - 1960///
CY  - Garden City, N.Y.
PB  - Doubleday
KW  - Trachtenberg, Jakow
KW  - Aritmética
ER  -