Columbia subject headings:
Harvard subject headings:
Bohemia (Czech Republic)--Emigration and immigration--Congresses.
Borderlands--Czech Republic--Bohemia--Congresses.
Borderlands--Europe, Central--Congresses.
Borderlands--Germany--Saxony--Congresses.
Europe, Central--Emigration and immigration--Congresses.
Europe, Central--Emigration and immigration--History--Congresses.
Saxony (Germany)--Emigration and immigration--Congresses.
Princeton subject headings:
Europe, Central--Emigration and immigration--History--Congresses.