Columbia subject headings:
Europe--Defenses.
Europe--Economic conditions--1945-
North America--Defenses.
North America--Economic conditions.
North Atlantic Treaty Organization.
Harvard subject headings:
Europe--Defenses.
Europe--Economic conditions--1945-
North America--Defenses.
North America--Economic conditions
North Atlantic Treaty Organization
Princeton subject headings:
Europe--Defenses.
Europe--Economic conditions--1945-
North America--Defenses.
North America--Economic conditions.
North Atlantic Treaty Organization.