| 其他書名 | Who broke the wartime codes? |
| 文獻類型 | BOOK |
| 語言 | English |
| 分類號 | 940.54 BAR |
| 出版 | Heinemann Library, Chicago, Illinois, 2014 |
| 主題 | World War, 1939-1945 -- Cryptography -- Juvenile literarture. |
| 題目 | World War, 1939-1945.Cryptographers -- United States -- History.Cryptographers -- Great Britain -- History. |
| 叢書 | Primary source detectives # |
| 描述 | 64 p. ;col. ill., col. ports.;23 cm |
| ISBN | 9781432996130 |