Columbia subject headings:
Minorities--Switzerland--Congresses.
Switzerland--Ethnic relations--Congresses.
Switzerland--History--1848---Congresses.
Harvard subject headings:
Minorities--Switzerland--Congresses.
Switzerland--Ethnic relations--Congresses.
Switzerland--History--1848---Congresses.
Princeton subject headings:
Minorities--Switzerland--Congresses.
Switzerland--Ethnic relations--Congresses.
Switzerland--History--1848---Congresses.