Columbia subject headings:
Harvard subject headings:
Corridonia Region (Italy)--History--Congresses.
Macerata (Italy : Province)--History, Local--Congresses.
Macerata (Italy)--History--Congresses.
Montolmo Region (Italy)--History--Congresses.
Princeton subject headings:
Corridonia Region (Italy)--History--Congresses.
Macerata (Italy : Province)--History, Local--Congresses.
Macerata (Italy)--History--Congresses.