Columbia subject headings:
Arms control--History--20th century.
Canada--Foreign relations--1945-
Disarmament--History--20th century.
Harvard subject headings:
Arms control--Canada--History--20th century.
Canada--Foreign relations--1945-
Disarmament--Canada--History--20th century.
Princeton subject headings:
Arms control--Canada--History.
Canada--Foreign relations--1945-
Disarmament--History.