Columbia subject headings:
Harvard subject headings:
Communication in politics--Germany--Congresses.
Communication in politics--Switzerland--Congresses.
Germany--Languages--Political aspects--Congresses.
Language and languages--Political aspects--Congresses
Switzerland--Languages--Political aspects--Congresses.
Princeton subject headings:
Communication in politics--Switzerland--Congresses.
Legislators--Switzerland--Language--Congresses.
Rhetoric--Political aspects--Switzerland--Congresses.