A NEW PLATEN GAUGE. HALLECR'S PLATEN GAUGE. Polarized Light. TRAMWAY RAIL EXPERIMENTS. Gas and Water Tight Cloth. American Society of Civil Engineers. A NEW DRAUGHTING PENCIL. bleGEE'S DRAUGHTING PENCIL. A New Use for Warts., scientific american, 1878-11-30
A NEW PLATEN GAUGE. HALLECR'S PLATEN GAUGE. Polarized Light. TRAMWAY RAIL EXPERIMENTS. Gas and Water Tight Cloth. American Society of Civil Engineers. A NEW DRAUGHTING PENCIL. bleGEE'S DRAUGHTING PENCIL. A New Use for Warts., scientific american, 1878-11-30
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