Columbia subject headings:
International relations--Societies, etc.--History.
New Commonwealth (Organization)
Harvard subject headings:
Europe--Economic integration.
International law--History.
International organization--History
International relations--History
International relations--Societies, etc.--History.
New Commonwealth (Organization)
Peace--Societies, etc.--History.
Princeton subject headings:
Europe--Economic integration.
International law--History.
International organization--History.
International relations--History.
New Commonwealth (Organization)
Peace--Societies, etc.--History.