Columbia subject headings:
Roads, Roman--Spain.
Romans--Spain.
Spain--Antiquities, Roman.
Harvard subject headings:
Inscriptions, Latin--Portugal.
Inscriptions, Latin--Spain.
Milestones--Portugal.
Milestones--Spain.
Portugal--Antiquities, Roman.
Roads, Roman--Portugal
Roads, Roman--Spain
Rome--Politics and government--284-476
Spain--Antiquities, Roman.
Princeton subject headings: