Columbia subject headings:
Harvard subject headings:
Austria--Antiquities, Roman.
Fortification, Roman--Austria.
Frontier and pioneer life--Austria.
Limes (Roman boundary)--Austria.
Military art and science--History--To 500
Noricum--Antiquities, Roman.
Romans--Austria
Princeton subject headings:
Austria--Antiquities, Roman.
Fortification, Roman--Austria.
Frontier and pioneer life--Austria--History.
Limes (Roman boundary)--Austria.
Military art and science--History--To 500.
Romans--Austria.