Columbia subject headings:
Vietnam War, 1961-1975--Technology.
Weapons--Vietnam.
Harvard subject headings:
Armor--Vietnam.
Military weapons--Vietnam.
United States--Armed Forces--Weapons systems.
Vietnam War, 1961-1975--Technology.
Vietnam War, 1961-1975--United States
Weapons systems.
Weapons--Vietnam.
Princeton subject headings:
Military weapons--Vietnam.
Vietnam War, 1961-1975--Technology.