A Medieval War Car. Amorphous Graphite as a Lubricant. Pennington's War Car 1900. A French 'War Car of 1902. WAR CARS ANCIENT AND MODERN., scientific american, 1907-10-12


A Medieval War Car. Amorphous Graphite as a Lubricant. Pennington's War Car 1900. A French 'War Car of 1902. WAR CARS ANCIENT AND MODERN., scientific american, 1907-10-12


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