Williams, Robert Chadwell, 1938-
Klaus Fuchs, atom spy / Robert Chadwell Williams.
Fuchs, Klaus Emil Julius, 1911-1988
Spies -- Soviet Union -- Biography.
Spies -- Great Britain -- Biography.
Spies -- United States -- Biography.
Espionage -- Great Britain -- History -- 20th century.
Espionage -- United States -- History -- 20th century.
Nuclear weapons -- Great Britain.
Nuclear weapons -- United States.