Columbia subject headings:
Agriculture--Sahel.
Droughts--Sahel.
Famines--Sahel.
Sahel Club.
Harvard subject headings:
Disaster relief--Sahel.
Economic development projects--Sahel.
Sahel Club
Sahel--Economic policy.
Princeton subject headings:
Agriculture--Sahel.
Droughts--Sahel.
Economic assistance--Sahel.
Economic development projects--Sahel.
Famines--Sahel.
Sahel Club.