Rivera, Julio Adalberto (hōˈlyō ädälbārˈtō rēvāˈrä) [key], 1921–73, president of El Salvador (1962–67). An army lieutenant colonel, he headed the junta that overthrew the leftist government in Jan., 1961. His junta rule was unexpectedly progressive, enacting numerous measures, including a new income tax law. In 1962 the junta promulgated a new constitution under which Rivera was elected president for a five-year term. His administration was noteworthy for its social reforms, economic prosperity, and domestic tranquility. He was succeeded by Fidel Sánchez Hernández.