Columbia subject headings:
Military helicopters.
Pleiku (Vietnam)--History.
Vietnam War, 1961-1975--Aerial operations, American.
Vietnam War, 1961-1975--Campaigns--Vietnam--Pleiku.
Harvard subject headings:
Military helicopters.
Pleiku (Vietnam)--History.
Vietnam War, 1961-1975--Aerial operations, American
Vietnam War, 1961-1975--Campaigns--Vietnam--Pleiku.
Princeton subject headings:
Military helicopters.
Pleiku (Vietnam)--History.
Vietnam War, 1961-1975--Aerial operations, American.
Vietnam War, 1961-1975--Campaigns--Vietnam--Pleiku.