The American magic codes, ciphers and the defeat of Japan
Lewin, Ronald.
Harmondsworth Penguin
1983, c1982
Originally published: New York : Farrar Strauss Giroux, 1982 ; London : Hutchinson, 1982
Bibliography: p309-311. - Includes index
World War, 1939-1945
World War, 1939-1945
World War, 1939-1945