Secret War
Subtitle: Spies, Ciphers, and Guerrillas, 1939-1945
Publisher: HarperCollins Canada, Limited
Published: 2016
Language: eng
ISBN-13: 9780062259295
Subjects: World war, 1939-1945, underground movements; World war, 1939-1945, cryptography; World war, 1939-1945, secret service; Intelligence service; Espionage; Great britain, history, 20th century