Columbia subject headings:
Europe, Central--Social conditions--Congresses.
Europe--Social conditions--Congresses.
Social institutions--Europe, Central--History--Congresses.
Social institutions--Europe--History--Congresses.
Social structure--Europe, Central--History--Congresses.
Social structure--Europe--History--Congresses.
Harvard subject headings:
Bohemia (Czech Republic)--History--To 1526--Congresses.
Bohemia (Czech Republic)--Social conditions--Congresses.
Germany--History--1273-1517--Congresses.
Germany--Social conditions--Congresses.
Social structure--Czech Republic--Bohemia--Congresses.
Social structure--Germany--Congresses.
Princeton subject headings:
Bohemia (Czech Republic)--History--To 1526--Congresses.
Bohemia (Czech Republic)--Social conditions--Congresses.
Germany--History--1273-1517--Congresses.
Germany--Social conditions--Congresses.
Social structure--Czech Republic--Bohemia--Congresses.
Social structure--Germany--Congresses.