AN AUTOMATIC MECHANISM FOR OPERATING MINE-DOORS. AN AUTOMATIC MECHANISM FOR OPERATING MINE-DOORS. Erratum. A SIMPLE SCAFFOLD-BRACKET. MILLER'S SCAFFOLD BRACKET. .0 I IP The First Horseless Carriage. THE NEW ELECTRIC LOCOMOTIVE OF THE PARIS-LYONS-MEDITERRANEAN RAILWAY. A FRENCH ELECTRIC LOCOMOTIVE., scientific american, 1899-02-25

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AN AUTOMATIC MECHANISM FOR OPERATING MINE-DOORS. AN AUTOMATIC MECHANISM FOR OPERATING MINE-DOORS. Erratum. A SIMPLE SCAFFOLD-BRACKET. MILLER'S SCAFFOLD BRACKET. .0 I IP The First Horseless Carriage. THE NEW ELECTRIC LOCOMOTIVE OF THE PARIS-LYONS-MEDITERRANEAN RAILWAY. A FRENCH ELECTRIC LOCOMOTIVE., scientific american, 1899-02-25

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