Columbia subject headings:
Berlin (Germany)--Biography.
Germany--Emigration and immigration.
Political refugees--Germany--Berlin.
Political refugees--Hungary--Budapest.
United States--Emigration and immigration.
Harvard subject headings:
Berlin (Germany)--Biography
Germany--Emigration and immigration.
Political refugees--Germany--Berlin.
Political refugees--Hungary--Budapest.
United States--Emigration and immigration.
Princeton subject headings:
Jung, Peter, 1932-