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Concentration Camp Inmates Had To Rebuild A Nazi Refinery The Koch Brothers' Dad Helped Construct | HuffPost
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Dark Money review: Nazi oil, the Koch brothers and a rightwing revolution | US political financing | The Guardian
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Dark Money: The Hidden History of the Billionaires Behind the Rise of the Radical Right: Mayer, Jane: 9780307947901: Amazon.com: Books
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The Kochs & the Nazis: Book Reveals Billionaires' Father Built Key Oil Refinery for the Third Reich - YouTube
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Father of Koch brothers helped build Nazi oil refinery, book claims | The Independent | The Independent
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