[중고]Scientific American Inventions and Discoveries: All the Milestones in Ingenuity--From the Discovery of Fire to the Invention of the Microwave Oven (Hardcover)
[중고]The Global Class War: How America's Bipartisan Elite Lost Our Future - And What It Will Take to Win It Back (Hardcover) - How America's Bipartisan Elite Lost Our Future - And What It Will Take to Win It Back