Columbia subject headings:
Betancourt, Rómulo, 1908-1981--Archives.
Venezuela--Politics and government--20th century--Sources.
Harvard subject headings:
Betancourt, Rómulo, 1908-1981--Archives.
Latin America--Politics and government--20th century--Sources.
Venezuela--Politics and government--20th century--Sources.
Princeton subject headings:
Betancourt, Rómulo, 1908---Archives.
Latin America--Politics and government--20th century--Sources.
Venezuela--Politics and government--20th century--Sources.