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ANSI/INCITS 21-1967(R1997)

ANSI/INCITS 21-1967(R1997)

Rectangular Holes in Twelve-Row Punched Cards (formerly ANSI X3.21-1967(R1997)) InterNational Committee for Information Technology Standards (formerly NCITS) / 01-Jan-1967

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Specifies the size and location of rectangular holes in twelve-row 3-1/4 inch wide punched cards. To be a processable document, suitable for information interchange, cards must also meet American National Standard Specifications for General Purpose Paper Cards for Information Processing, X3.11-1990.



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