Columbia subject headings:
Harvard subject headings:
Albania--Foreign relations
Croatia--Foreign relations
North Macedonia--Foreign relations
United States--Foreign relations--Balkan Peninsula.
Princeton subject headings:
Adriatic Sea Region--Foreign relations--United States.
Albania--Charters, grants, privileges.
Croatia--Charters, grants, privileges.
Macedonia--Charters, grants, privileges.
United States--Foreign relations--Adriatic Sea Region.