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ANSI/INCITS 21

1967 Edition, 2017

Complete Document

Rectangular Holes in Twelve-Row Punched Cards

Includes all amendments and changes through Stabilization Notice (No longer revised / updated) , 2017


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This standard specifies the size and location of rectangular holes in twelve-row 3%-inch wide punched cards. To be a processable document, suitable for information interchange. cards must also meet USA Standard Specifications for General Purpose Paper Cards for Information Processing, X3.11-1966.