TY  - BOOK
AU  - Freitag,Herta Toussig
TI  - The number story
AV  - MATH PAM QA241.F7 
PY  - 1960///
CY  - Washington
PB  - : National Council of Teachers of Mathematics
KW  - Numerals
KW  -  Numeration
KW  - Mathematical notation
ER  -