Columbia subject headings:
African trypanosomiasis--Prevention--History.
Europe--Colonies--Africa--History.
Tropical medicine--Africa--History--19th century.
Tropical medicine--Africa--History--20th century.
Tropical medicine--Colonies--Europe--History.
Tropical medicine--Europe--History--19th century.
Tropical medicine--Europe--History--20th century.
Harvard subject headings:
African trypanosomiasis--Prevention--History.
Europe--Colonies--Africa--History.
Tropical medicine--Africa--History--19th century.
Tropical medicine--Africa--History--20th century.
Tropical medicine--Colonies--Europe--History.
Tropical medicine--Europe--History--19th century.
Tropical medicine--Europe--History--20th century.
Princeton subject headings:
African trypanosomiasis--Prevention--History.
Europe--Colonies--Africa--History.
Tropical medicine--Africa--History--19th century.
Tropical medicine--Africa--History--20th century.
Tropical medicine--Colonies--Europe--History.
Tropical medicine--Europe--History--19th century.
Tropical medicine--Europe--History--20th century.