TY  - BOOK
AU  - Locke, Flora M.
AU  - Dehr, Dorothy
TI  - OFFICE CALCULATING AND ADDING MACHINES
U1  - 651.26 
PY  - 1965///
CY  - New York
PB  - Wiley
KW  - Electronic Calculating Machines
KW  - Calculating-Machines
ER  -