TY  - BOOK
AU  - Lehrenbaum,Burton
TI  - By the numbers: the story of counting from the abacus to the artificial brain
AV  - QA141.2 .L4
U1  - 511/.1 
PY  - 1966///]
CY  - Hartford
PB  - Veeder-Root
KW  - Numeration
KW  - History
KW  - Arithmetic
UR  - http://www.archive.org/details/bynumbersstoryof00lehr
UR  - http://www.openlibrary.org/books/OL5528709M
ER  -