Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Antiquities, Roman.
Roads, Roman--Balkan Peninsula--History.
Via Egnatia--Geography.
Via Egnatia--History.
Princeton subject headings:
Balkan Peninsula--Antiquities, Roman.
Roads, Roman--Balkan Peninsula--History.
Via Egnatia--Geography.
Via Egnatia--History.