Columbia subject headings:
Africa, Northeast--Economic conditions.
Africa, Northeast--Social conditions.
Famines--Africa, Northeast.
Food relief--Africa, Northeast.
Harvard subject headings:
Africa, Northeast--Description and travel.
Africa, Northeast--Politics and government--1974-
Chad--Description and travel
Chad--Politics and government--1960-
Chad--Politics and government--1960-1990
Food relief--Africa, Northeast.
Food relief--Chad.
Mottern, Nicholas--Journeys--Africa, Northeast.
Mottern, Nicholas--Journeys--Chad.
Mottern, Nicholas--Travel--Africa, Northeast.
Mottern, Nicholas--Travel--Chad.
Princeton subject headings:
Africa--Economic conditions.
Economic assistance--Africa.
Famines--Africa.