Columbia subject headings:
Mauritania--Boundaries--Senegal.
Mauritania--Foreign relations--Senegal.
Senegal--Boundaries--Mauritania.
Senegal--Foreign relations--Mauritania.
Water resources development--Political aspects--Senegal River Valley.
Water-supply--Political aspects--Senegal River Valley.
Harvard subject headings:
Mauritania--Boundaries--Senegal.
Mauritania--Foreign relations--Senegal.
Senegal--Boundaries--Mauritania.
Senegal--Foreign relations--Mauritania.
Water resources development--Political aspects.
Water resources development--Senegal River Valley.
Water-supply--Political aspects.
Princeton subject headings:
Mauritania--Boundaries--Senegal.
Mauritania--Foreign relations--Senegal.
Senegal--Boundaries--Mauritania.
Senegal--Foreign relations--Mauritania.
Water resources development--Political aspects--Senegal River Valley.
Water-supply--Political aspects--Senegal River Valley.