Columbia subject headings:
Harvard subject headings:
Germany--Emigration and immigration--History--Congresses.
Migration, Internal--Germany--History--Congresses.
Migration, Internal--Germany--Swabia--History--Congresses.
Swabia (Germany)--Emigration and immigration--History--Congresses.
Princeton subject headings:
Augsburg (Germany)--Emigration and immigration--Congresses.
Swabia (Germany)--Emigration and immigration--Congresses.