Columbia subject headings:
Harvard subject headings:
German language--Dialects--Germany--Bavaria--History.
German language--Dialects--Germany--Swabia--History.
German language--Germany--Bavaria--Spoken German--History.
German language--Germany--Swabia--Spoken German--History.
German language--Phonetics--History.
Princeton subject headings:
German language--Dialects--Germany--Bavaria.
German language--Dialects--Germany--Swabia.
German language--Germany--Bavaria--Spoken German.
German language--Germany--Swabia--Spoken German.
German language--Phonetics.