Columbia subject headings:
Harvard subject headings:
Charles IV, Holy Roman Emperor, 1316-1378
Lucca (Italy)--Foreign relations--Italy--Pisa.
Lucca (Italy)--History--Sources.
Pisa (Italy)--Foreign relations--Italy--Lucca.
Princeton subject headings:
Charles IV, Holy Roman Emperor, 1316-1378.
Lucca (Italy)--Foreign relations--Italy--Pisa.
Lucca (Italy)--History--Sources.
Pisa (Italy)--Foreign relations--Italy--Lucca.