Columbia subject headings:
Ay Khānom Region (Afghanistan)--Antiquities.
Ay Khānom Region (Afghanistan)--Description and travel.
Irrigation--Afghanistan--Ay Khānom Region.
Harvard subject headings:
Ay Khānom Region (Afghanistan)--Antiquities.
Ay Khānom Region (Afghanistan)--Description and travel.
Irrigation--Afghanistan--Ay Khānom Region.
Princeton subject headings: