Columbia subject headings:
North Atlantic Treaty Organization--Spain--Congresses.
Spain--History--1975---Congresses.
Spain--Military policy--Congresses.
Harvard subject headings:
North Atlantic Treaty Organization--Spain--Congresses.
Spain--History--1975---Congresses.
Spain--Military policy--Congresses.
Princeton subject headings:
North Atlantic Treaty Organization--Spain--Congresses.
Spain--History--1975---Congresses.
Spain--Military policy--Congresses.