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      Knowledge is Power

      Scientific American April 21, 1917

      The Non-Recoil Gun

      A Novel Weapon That Promises to be an Important Factor in War

      • April 21, 1917

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      More in the April 21, 1917 issue of Scientific American
      • Damage to Seasoned Hard Wood by Lyctus Beetles
      • Quantity Production
      • Torsion and Bending Tests
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