Columbia subject headings:
Harvard subject headings:
Garfagnana (Italy : Region)--Commerce--History--Congresses.
Garfagnana (Italy : Region)--History--Congresses.
Transportation--Italy--Garfagnana (Region)--History--Congresses.
Princeton subject headings:
Garfagnana (Italy)--Commerce--History--To 1500--Congresses.
Trade routes--Italy--Garfagnana--History--Congresses.
Transportation--Italy--Garfagnana--History--Congresses.