TY  - BOOK
AU  - Walker, Arthur Lee
AU  - Hanna, J. Marshall
TI  - HOW TO USE ADDING AND CALCULATING MACHINE FULL-KEY-BOARD ADDING MACHINE, TEN-KEY ADDING MACHINE, PRINTING CALCULATOR
U1  - 651.8 
PY  - 1967///
CY  - New York
PB  - Gregg Division, Mcgraw-Hill
KW  - Calculating-Machines -- Problems, Exercises, Etc
ER  -