Columbia subject headings:
Harvard subject headings:
Chad--Politics and government
Economic development--Chad--History--21st century.
Princeton subject headings:
Chad--Economic policy--21st century.
Chad--Politics and government--21st century.
Chad--Social policy--21st century.
Economic development--Chad--History--21st century.
Education and state--Chad.
Poverty--Government policy--Chad.
Sustainable development--Chad.