Columbia subject headings:
Contiguous zones (Law of the sea)--Niue.
Contiguous zones (Law of the sea)--United States.
Territorial waters--Niue.
Territorial waters--United States.
Harvard subject headings:
Contiguous zones (Law of the sea)--Niue.
Contiguous zones (Law of the sea)--United States.
Territorial waters--Niue.
Territorial waters--United States.
Princeton subject headings: