Solve for X: Deciphering Calibration Marks Made for Classified Spy Missions Posted by atriix on Saturday July 15, 2017 @05:24PM from the 99percentinvisible.org dept. http://99percentinvisible.org/article/solve-x-deciphering-calibration-marks-made-classified-spy-missions/ ( no comments | 2 points | on HN )
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