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Rubber Band Engineer: All-Ballistic Pocket Edition: From a Slingshot Rifle to a Mousetrap Catapult, Build 10 Guerrilla Gadgets from Household Hardware

Rubber Band Engineer: All-Ballistic Pocket Edition: From a Slingshot Rifle to a Mousetrap Catapult, Build 10 Guerrilla Gadgets from Household Hardware

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