Columbia subject headings:
Harvard subject headings:
Citizenship--Rhine River Valley--History--To 1500--Congresses.
Middle Ages--Congresses
Political participation--Rhine River Valley--History--To 1500--Congresses.
Rhine River Valley--History--Congresses.
Princeton subject headings:
Civilization, Medieval--Congresses.
Political participation--France--Alsace--To 1500--Congresses.
Political participation--Germany, Southern--To 1500--Congresses.
Political participation--Rhine River Valley--To 1500--Congresses.