1937 · Berlin
by Deutsche Hollerith Maschinen Gesellschaft
Berlin: DeHoMag, 1937. [24]pp., irregularly paginated. Text diagrams. Reproduced from typescript. Original printed wrappers, slighly soiled; pencil marks in margins of a few leaves. Contains practice templates for the training of Hollerith punch-operators and examiners. (Inventory #: 45262)