Columbia subject headings:
German language--Dialects--Congresses.
German language--Dialects--Switzerland--Congresses.
Harvard subject headings:
Alemannic dialects--Congresses.
German language--Dialects--Congresses
German language--Dialects--Switzerland--Congresses.
Princeton subject headings:
German language--Dialects--Alemannic--Congresses.
German language--Dialects--Switzerland--Congresses.