Karl Ludvigsen
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Karl Ludvigsen
Professor Porsche's Wars
In-depth, richly illustrated account of Ferdinand Porsche's design and production for the military .
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Karl Ludvigsen
Power Unleashed
Award-winning author Karl Ludvigsen takes the reader behind the scenes of the roller-coaster ride of supercharging, turbocharging and even more exotic power-boosting inventions throughout automotive and aviation history.
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