Columbia subject headings:
Grazing--Senegal.
Migration, Internal--Senegal.
Range policy--Senegal.
Rangelands--Senegal--Water-supply.
Water-supply--Senegal.
Harvard subject headings:
Droughts--Senegal.
Land tenure--Senegal.
Migration, Internal--Senegal.
Natural resources--Senegal--Management.
Princeton subject headings: