Title: MASK: MI5'S PENETRATION OF THE COMMUNIST PARTY OF GREAT BRITAIN
Subjects: Great britain, history, Communist international, Espionage, british, Soviet Espionage, History, Great Britain. MI5, Great Britain, Communist Party of Great Britain, Espionnage soviétique, TRUE CRIME, Espionage, POLITICAL SCIENCE, Political Freedom & Security, Intelligence, British Espionage