Columbia subject headings:
Bong family.
Vietnam War, 1961-1975--Social aspects.
Vietnam--History--20th century.
Vietnam--Social conditions.
Harvard subject headings:
Vietnam War, 1961-1975--Social aspects
Vietnam--History--20th century.
Vietnam--Social conditions.
Princeton subject headings:
Bong family.
Vietnam War, 1961-1975--Social aspects.
Vietnam--Biography.
Vietnam--History--20th century.
Vietnam--Social conditions.