Top Secret Ultra: An Insider's Account of How British Intelligence Monitored and Broke the Nazi Top-Secret Codes
Pantheon Books, 1980. First American Edition. hardcover. 8x5x0. First American Edition from 1980. Dust jacket has light edge wear and toning. Price has been clipped. Gray paper boards and binding are good. Foxed page edges. Pages are clean and unmarked. 132 pages. LO.