Columbia subject headings:
Harvard subject headings:
Diseases--Social aspects--Egypt--History.
Egypt--Social conditions--20th cenutry.
Epidemics--Egypt--History.
Princeton subject headings:
Diseases--Egypt--History--20th century.
Diseases--Social aspects--Egypt--20th century.
Egypt--Social conditions--20th century.
Epidemics--Egypt--History--20th century.
Epidemics--Social aspects--Egypt--20th century.