An Arrangement of Twin Propellers for Aeroplanes. A Question of Priority of Invention. reduced the cost of production by one-half. English engineers openly opposed him but secretly Rearmament of Warships. the _United States. VTHE JAPANESE NAVY OF TO-DAY. this class is 52025 tons., scientific american, 1908-10-24

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An Arrangement of Twin Propellers for Aeroplanes. A Question of Priority of Invention. reduced the cost of production by one-half. English engineers openly opposed him but secretly Rearmament of Warships. the _United States. VTHE JAPANESE NAVY OF TO-DAY. this class is 52025 tons., scientific american, 1908-10-24

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