Explosive Waves. S5 IR WAGON RUNNING GEAR. HOMBACH'S HUB ATTACHING DEVICE. The Cost of a Lead Pencil. Magnets. FANNING'S WAGON RUNNING GEAR., scientific american, 1884-06-28

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Explosive Waves. S5 IR WAGON RUNNING GEAR. HOMBACH'S HUB ATTACHING DEVICE. The Cost of a Lead Pencil. Magnets. FANNING'S WAGON RUNNING GEAR., scientific american, 1884-06-28

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