Columbia subject headings:
Armed merchant ships.
Arms transfers--Law and legislation.
Contraband of war.
Firearms industry and trade--United States.
Industrial mobilization.
Military weapons--Taxation.
Neutral trade with belligerents.
Pricing.
Shipbuilding--United States.
Weapons industry.
World War, 1914-1918--Equipment and supplies.
World War, 1914-1918--Finance.
World War, 1914-1918--Naval operations.
Harvard subject headings:
Defense industries
Firearms industry and trade--United States.
Military weapons
Princeton subject headings: