Columbia subject headings:
Commercial law--United States.
International law.
Trading with the enemy.
World War, 1914-1918--Law and legislation--United States.
Harvard subject headings:
Commercial law--United States
International law.
Trading with the enemy
World War, 1914-1918--Law and legislation--United States
Princeton subject headings:
Commercial law--United States.
International law and relations.
Trading with the enemy.
World War, 1914-1918--Law and legislation--United States.