Information technology - Codes for the Identification of Counties and Equivalent Areas of the United States, Puerto Rico, and the Insular Areas
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Representation of Time for Information Interchange
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Magnetic Tape Format for Information Interchange, 128-Track, Parallel Serpentine, 12.65 mm (1/2 in), 3400 bpmm (86 360 bpi) Run Length Limited Recording
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American National Standard for Information Technology - Magnetic Tape Cartridge for Information Interchange,0.50 in (12.65 mm), Serial Serpentine, 128-Track, 81 600 bpi (3212 bpmm) DLT4 Format
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Unrecorded magnetic tape cartridge for information interchange, 12.65 mm (0.498 in), 128-track, parallel serpentine, 2550 ftpmm (64 770 ftpi)
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