Columbia subject headings:
Harvard subject headings:
Colombia--Armed Forces--Political activity--History--20th century.
Colombia--Politics and government--1946-1974.
Colombia. Fuerzas Militares--Political activity--History--20th century.
Ejército de Liberación Nacional (Colombia)--History.
Movimiento Revolucionario Liberal--History.
Princeton subject headings:
Colombia--Politics and government--1946-1974.