Enigma U-boats : breaking the code
Showell, Jak P. Mallmann2009
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Enigma U-boats : breaking the code / Jak P. Mallmann Showell.
Rev. ed.
Hersham, Surrey : Ian Allan, 2009.
224 p. : ill. ; 20 cm.
Includes index.Bibliography: p. 213-221.
9780711033962
940.54510943940.5451
English
15189