Columbia subject headings:
Harvard subject headings:
Eckert, Hans, 1912-2011--Congresses.
Intelligence service--Switzerland--History--20th century--Congresses.
Refugees--Government policy--Switzerland--History--20th century--Congresses.
Switzerland--Politics and government--20th century--Congresses.
Princeton subject headings:
Eckert, Hans, 1912-2011--Congresses.
Intelligence service--Switzerland--History--20th century--Congresses.
Lawyers--Switzerland--Biography.
Refugees--Government policy--Switzerland--History--20th century--Congresses.
Switzerland--Politics and government--20th century--Congresses.