Columbia subject headings:
Europe--Defenses--Periodicals.
European cooperation--Periodicals.
United States. Congress. Commission on Security and Cooperation in Europe--Periodicals.
Harvard subject headings:
Europe--Defenses--Periodicals.
European cooperation--Periodicals.
United States. Congress. Commission on Security and Cooperation in Europe--Periodicals.
Princeton subject headings:
Europe--Defenses--Periodicals.
European cooperation--Periodicals.
Periodicals.
United States. Congress. Commission on Security and Cooperation in Europe--Periodicals.