ISO-1681 › Information processing - Unpunched paper cards - Specification
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Defines the characteristics of general-purpose unpunched paper cards to be used information interchange between different punched card devices. References: ISO/R534; ISO/R 536; ISO/R 1974; ISO/R 2144; ISO 2493; ISO 2494; ISO 2758.
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Dec. 1, 1973
ISO/IEC JTC 1/SC 2