Columbia subject headings:
Continental shelf--Colombia.
Continental shelf--Nicaragua.
Law of the sea.
Maritime law--Nicaragua--History.
San Andrés y Providencia (Colombia)--Foreign relations--Treaties.
Harvard subject headings:
Colombia--Foreign relations--Nicaragua.
Nicaragua--Foreign relations--Colombia.
San Andrés y Providencia (Colombia)
Territorial waters--Colombia--San Andrés y Providencia.
Princeton subject headings: