Columbia subject headings:
Las Heras, Juan Gregorio de, 1780-1866.
Latin America--Politics and government--1806-1880.
Spain--Foreign relations--Latin America.
Harvard subject headings:
Las Heras, Juan Gregorio de, 1780-1866.
Latin America--Politics and government--1806-1830.
Latin America--Politics and government--1830-1948.
Spain--Foreign relations--Latin America.
Princeton subject headings: