Columbia subject headings:
Harvard subject headings:
Africa, Eastern--Civilization--Oriental influences.
Africa, Eastern--Commerce--History--19th century.
Credit--Africa, Eastern--History--19th century.
Credit--Indian Ocean Region--History--19th century.
Indian Ocean Region--Commerce--History--19th century.
Princeton subject headings:
Africa, Eastern--Civilization--Oriental influences.
Africa, Eastern--Commerce--History--19th century.
Credit--Africa, Eastern--History--19th century.
Credit--Indian Ocean Region--History--19th century.
Indian Ocean Region--Commerce--History--19th century.