Columbia subject headings:
Harvard subject headings:
Egypt--History--19th century.
Egypt--History--20th century.
Irrigation canals and flumes--Egypt--History.
Irrigation engineering--Egypt--History.
Nile River--Regulation.
River engineering--Egypt--History.
Water resources development--Egypt--History.
Princeton subject headings:
Egypt--History--19th century.
Egypt--History--20th century.
Irrigation canals and flumes--Egypt--History.
Irrigation engineering--Egypt--History.
Nile River--Regulation.
River engineering--Egypt--History.
Water resources development--Egypt--History.