Columbia subject headings:
Harvard subject headings:
Charles IV, Holy Roman Emperor, 1316-1378--Congresses.
Constitutional history--Holy Roman Empire--Congresses.
Constitutional law--Holy Roman Empire--Congresses.
Holy Roman Empire--History--Charles IV, 1347-1378--Congresses.
Holy Roman Empire. Bulla Aurea--Congresses.
Memory of the World Programme--Congresses.
Princeton subject headings:
Constitutional history--Holy Roman Empire.
Holy Roman Empire. Bulla Aurea
Holy Roman Empire. Bulla Aurea.