Walker, Arthur L.
How to use adding and calculating machines - 4th ed. - New York McGraw-Hill 1979 - 218 p. ill. 28 cm.
0070678251
Calculators
651.82 / WAL/1979
How to use adding and calculating machines - 4th ed. - New York McGraw-Hill 1979 - 218 p. ill. 28 cm.
0070678251
Calculators
651.82 / WAL/1979