Alfonso López Michelsen (b. June 30, 1913) is a Colombian politician. He was president of Colombia from 1974 to 1978. June 30 is the 181st day of the year (182nd in leap years) in the Gregorian Calendar, with 184 days remaining. ... 1913 is a common year starting on Wednesday. ... The Republic of Colombia is a country in north-western South America. ... Politics is the process and method of decision-making for groups of human beings. ... List of Heads of State (Presidents etc. ... 1974 is a common year starting on Tuesday (click on link for calendar). ... Events January January 1 - The Copyright Act of 1976 takes effect, making sweeping changes to United States copyright law. ...