Columbia subject headings:
Harvard subject headings:
Europe--Foreign relations--Poland.
North Atlantic Treaty Organization--Membership.
North Atlantic Treaty Organization--Poland.
Poland--Foreign relations--1989-
Poland--Foreign relations--Europe
Poland--Military policy.
Security, International
Princeton subject headings:
Europe--Foreign relations--Poland.
North Atlantic Treaty Organization--Membership.
North Atlantic Treaty Organization--Poland.
Poland--Foreign relations--1989-
Poland--Foreign relations--Europe.
Poland--Military policy.
Security, International.