Columbia subject headings:
Rome--History--Aurelian, 270-275.
Tadmur (Syria)--Antiquities.
Zenobia, Queen of Palmyra.
Harvard subject headings:
Tadmur (Syria)--Antiquities.
Tadmur (Syria)--History.
Zenobia, Queen of Palmyra.
Princeton subject headings:
Rome--History--Aurelian, 270-275.
Tadmur (Syria)--Antiquities.
Zenobia, Queen of Palmyra