Columbia subject headings:
Harvard subject headings:
Cities and towns, Medieval--Italy--Marche--Congresses.
Immigrants--Italy--Marche--History--Congresses.
Marche (Italy)--Civilization--Congresses.
Marche (Italy)--Ethnic relations--Congresses.
Marche (Italy)--History--Congresses.
Marche (Italy)--Social life and customs--Congresses.
Migration, Internal--Italy--Marche--History--Congresses.
Noncitizens--Italy--Marche--History--Congresses.
Princeton subject headings:
Cities and towns, Medieval--Italy--Marche--Congresses.
Immigrants--Italy--Marche--History--Congresses.
Marche (Italy)--Civilization--Congresses.
Marche (Italy)--Ethnic relations--Congresses.
Migration, Internal--Italy--Marche--History--Congresses.