Columbia subject headings:
Drainage--Egypt.
Drainage--Greece.
Drainage--Iran.
Irrigation--Egypt.
Irrigation--Greece.
Irrigation--Iran.
Qanats--Egypt.
Qanats--Greece.
Qanats--Iran.
Underground pipelines--Egypt.
Underground pipelines--Greece.
Underground pipelines--Iran.
Harvard subject headings:
Drainage--Middle East--History.
Egypt--Antiquities.
Greece--Antiquities.
Hydraulic engineering--Middle East--History.
Iran--Antiquities.
Irrigation--Middle East--History.
Princeton subject headings:
Drainage--Middle East--History.
Egypt--Antiquities.
Greece--Antiquities.
Hydraulic engineering--Middle East--History.
Iran--Antiquities.
Irrigation--Middle East--History.