Columbia subject headings:
Harvard subject headings:
Architects--Germany--Biography
Architects--Soviet Union--Biography.
Communists--Germany--Biography
Communists--Soviet Union--Biography
Concentration camps--Soviet Union--Biography.
GULag NKVD--Biography.
Germans--Soviet Union--Biography
Hamburger, Rudolf, 1903-1980.
Hamburger, Rudolf.
Political persecution--Soviet Union.
Political prisoners--Soviet Union--Biography
Prisoners--Soviet Union--Social conditions.
Princeton subject headings:
Communists--Germany--Biography.
Communists--Soviet Union--Biography.
GULag NKVD--Biography.
Germans--Soviet Union--Biography.
Hamburger, Rudolf, 1903-1980.
Political persecution--Soviet Union.