Columbia subject headings:
Agriculture--Burundi--History.
Burundi--Economic conditions.
Burundi--Historical geography.
Harvard subject headings:
Agriculture--Burundi--History.
Burundi--Economic conditions.
Burundi--Historical geography.
Burundi--Politics and government.
Burundi--Social conditions.
Princeton subject headings:
Burundi--Economic conditions.
Burundi--Politics and government.
Burundi--Social conditions.