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Digital data record
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Camera
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Coded data on a record carrier and method for encoding same
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Method and apparatus for reading a data record carrier
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Method for formatting optically encoded digital data on a substrate and the data record carrier formed thereby
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Method for optically encoding digital data on a substrate and the data record carrier formed thereby
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Method and apparatus for optically reading digital data inscribed in an arcuate pattern on a data carrier
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Optical floppy disc data storage and retrieval techniques
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Microfiche information and control system
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Microfiche information retrieval and control system utilizing machine readable microfiche and visually readable microfiche
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Digital microfiche and apparatus for accurately positioning the microfiche
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Scrolling microfiche and method of producing the same
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