"Spionage." . . "Geschichte 1939-1957" . . "United States. Dept. of Defense. National Security Agency." . . "United States" . . "Sowjetunion." . . "Quelle." . . . . . . . . . . . . . . "Venona : Soviet espionage and the American response 1939-1957 : [prepared from official sources]" . . . . . "Venona : Soviet espionage and the American response 1939-1957"@en . "Venona Soviet espionage and the American response 1939-1957" . "Venona Soviet espionage and the American response 1939-1957"@en . . . . . "Venona : Soviet espionage and the American response 1939 - 1957" . . "History" . "History"@en . . . . . . . . . . . . . . "Venona : Soviet espionage and the American response, 1939-1957"@en . "Venona : Soviet espionage and the American response, 1939-1957" . "Venona Soviet espionage and the American response, 1939-1957"@en . . . "Venona Soviet espionage and the American response : 1939-1957" . . . . . . . . . . . "Sources"@en . . "Sources" . "Soviet Union" . . . . "USA." . .