Columbia subject headings:
Baghdad (Iraq)--Economic conditions.
Baghdad (Iraq)--Intellectual life.
Baghdad (Iraq)--Social life and customs.
Iraq--History--634-1534.
Harvard subject headings:
Baghdad (Iraq)--Economic conditions.
Baghdad (Iraq)--Intellectual life.
Baghdad (Iraq)--Social life and customs.
Iraq--History--634-1534
Princeton subject headings:
Baghdad (Iraq)--History.
Iraq--History--634-1534.