Columbia subject headings:
Hama, Boubou, 1906-1982.
Niger--History--20th century.
Harvard subject headings:
Authors, Nigerian--Congresses.
Hama, Boubou, 1906-1982--Congresses.
Niger--History--Congresses.
Political activists--Niger--Congresses.
Politicians--Niger--Congresses.
Teachers--Niger--Congresses.
Princeton subject headings:
Authors, Nigerian--Congresses.
Hama, Boubou, 1906-1982--Congresses.
Niger--History--Congresses.
Political activists--Niger--Congresses.
Politicians--Niger--Congresses.
Teachers--Niger--Congresses.