Columbia subject headings:
Harvard subject headings:
Chad--Politics and government--20th century.
Chad--Politics and government--21st century.
Constitutional history--Chad.
Déby, Idriss
Habré, Hissein
Malloum N'Gakoutou Bey-Ndi, Félix, 1932-
Tombalbaye, Ngarta, 1918-1975
Princeton subject headings:
Chad--Politics and government--1960-1990.
Déby, Idriss.
Habré, Hissein.
Malloum N'Gakoutou Bey-Ndi, Félix, 1932-
Tombalbaye, Ngarta, 1918-1975.