Columbia subject headings:
Acción Democrática (Venezuela)--History--Sources.
Betancourt, Rómulo, 1908-1981--Sources.
Mérida (Venezuela : State)--Politics and government--20th century--Sources.
Presidents--Venezuela--20th century--Biography--Sources.
Venezuela--Politics and government--1958-1974--Sources.
Harvard subject headings:
Acción Democrática (Venezuela)--History.
Betancourt, Rómulo, 1908-1981.
Mérida (Venezuela : State)--Politics and government--20th century.
Venezuela--Politics and government--1935-1958.
Venezuela--Politics and government--1958-1974
Princeton subject headings:
Acción Democrática (Venezuela)--History--Sources.
Betancourt, Rómulo, 1908-1981--Sources.
Mérida (Venezuela : State)--Politics and government--20th century--Sources.
Presidents--Venezuela--20th century--Biography--Sources.
Venezuela--Politics and government--1958-1974--Sources.