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![Adventures from the Technology Underground Catapults, Pulsejets, Rail Guns, Flamethrowers, Tesla Coils, Air Cannons, and the Garage Warriors Who Love [Paperback]](/itemImage/2/0/2/5/2_7001627.jpg "Adventures from the Technology Underground Catapults, Pulsejets, Rail Guns, Flamethrowers, Tesla Coils, Air Cannons, and the Garage Warriors Who Love [Paperback]")