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Start Over You searched for: Subjects Optical Devices Remove constraint Subjects: Optical Devices Authors Armored Medical Research Laboratory (U.S.), author. Remove constraint Authors: Armored Medical Research Laboratory (U.S.), author. Titles Partial report on visual requirements, characteristics and limitations of present visual devices in tanks and means for improving sighting telescopes and periscopes Remove constraint Titles: Partial report on visual requirements, characteristics and limitations of present visual devices in tanks and means for improving sighting telescopes and periscopes

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