TY  - GEN
AU  - Waerden, B. L. Van Der
AU  - Folkerts, Menso
TI  - WRITTEN NUMBERS
U1  - 513 
PY  - 1976///
CY  - Milton Keynes 
PB  - Open University Press
KW  - Numericals, Writing Of
KW  - Mathematics -- History
KW  - Numerals -- History
ER  -