Description1909-09-25 - 1ère Exposition de Locomotion Aérienne - le stand Panhard & Levassor.png
Français : 1909-09-25 - 1ère Exposition de Locomotion Aérienne : le moteur à soupapes concentriques conçu par A. C. KREBS sur le stand Panhard & Levassor.
English: 1909-09-25 - 1st Air Locomotion Exhibition: the concentric valve engine designed by A. C. KREBS on the Panhard & Levassor stand.
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