Solve for X: Deciphering Calibration Marks Made for Classified Spy Missions | Dark Hacker News

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Solve for X: Deciphering Calibration Marks Made for Classified Spy Missions(99percentinvisible.org)

3 points by alanpage 9 years ago | 0 comments

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Solve for X: Deciphering Calibration Marks Made for Classified Spy Missions | Dark Hacker News