Title: The battle of the Atlantic and signals intelligence : U-boat situations and trends, 1941-1945 /
Authors: Syrett, David.; Clayton, J. W.; Winn, Rodger.
Publisher: Published by Ashgate for the Navy Records Society,
Year: 1998
Subjects: World War, 1939-1945 Cryptography.; World War, 1939-1945 Military intelligence.; World War, 1939-1945 Naval operations Submarine.; World War, 1939-1945 Naval operations, German.; World War, 1939-1945 Campaigns Atlantic Ocean.