Choices & Change: Microeconomics, Lesson 1, Part 4, The Study of Choice: Part 4
directed by Ken Harrison, fl. 1969-1999; produced by Ken Harrison, fl. 1969-1999, Dallas TeleLearning, in Choices & Change: Microeconomics, Lesson 1, Part 4 (Dallas, TX: Dallas County Community College District, 2000), 9 mins
