Columbia subject headings:
Excavations (Archaeology)--Syria--Tadmur.
Tadmur (Syria)--Antiquities.
Harvard subject headings:
Excavations (Archaeology)--Syria--Tadmur.
Tadmur (Syria)--Antiquities.
Princeton subject headings:
Excavations (Archaeology)--Syria--Tadmur.
Tadmur (Syria)--Antiquities.