Kenneth Balch Robinson.
IBM electric punched card accounting machines, customer engineering manual of instruction; alphabetical accounting machine type 405, electrical principles.
R621519. IBM electric punched card accounting machines, customer engineering manual of instruction; alphabetical accounting machine type 405, electrical principles. By Kenneth Balch Robinson. © 12May48; AA86572. International Business Machines Corporation (PWH); 15Dec75; R621519.
International Business Machines Corporation|PWH