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Start Over 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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