Columbia subject headings:
Marv Plain (Iran)--Antiquities.
Marv Plain (Iran)--History.
Harvard subject headings:
Marv Plain (Iran)--Antiquities.
Marv Plain (Iran)--History.
Merv (Extinct city)--Antiquities.
Merv (Extinct city)--History.
Princeton subject headings:
Marv Plain (Iran)--Antiquities.
Marv Plain (Iran)--History.