Stated first US edition is hardcover and has light shelfwear to edges of boards and DJ. Pages tight and clean. DJ not clipped and protected with clear plastic. Small sticker pull on front right top. Retired library with usual marks/attachments. Pocket removed. 239 pages. HardCover Binding. Year: 1966. ISBN: 0. When the brilliant German mathematician Dortmund died in 1938, he left an unfinished body of work of a most peculiar nature. Nazi scientific circles believed that his theories might lead to surprising practical results, but for years no one had been able to figure out his calculations, and until after the war the papers were neglected.