Columbia subject headings:
Artisans--Portugal--History--To 1500--Congresses.
Artisans--Spain--History--To 1500--Congresses.
Portugal--Antiquities, Roman--Congresses.
Romans--Portugal--Congresses.
Romans--Spain--Congresses.
Spain--Antiquities, Roman--Congresses.
Harvard subject headings:
Artisans--Portugal--History--To 1500--Congresses.
Artisans--Spain--History--To 1500--Congresses.
Portugal--Antiquities, Roman--Congresses.
Romans--Portugal--Congresses.
Romans--Spain--Congresses
Spain--Antiquities, Roman--Congresses.
Princeton subject headings:
Artisans--Portugal--History--To 1500--Congresses.
Artisans--Spain--History--To 1500--Congresses.
Portugal--Antiquities, Roman--Congresses.
Romans--Portugal--Congresses.
Romans--Spain--Congresses.
Spain--Antiquities, Roman--Congresses.