TY  - BOOK
AU  - Freitag,Herta Taussig
AU  - Freitag,Arthur H
TI  - The number story
PY  - 1960///]
CY  - Washington
PB  - National Council of Teachers of Mathematics
KW  - Numerals
KW  - Local
KW  - Mathematical notation
KW  - Numeration
ER  -