Bingham, Robert C. Economic concepts : a programmed approach / Robert C. Bingham ; revised by William Henry Pope. - 8th ed. - New York : McGraw-Hill Publishing, c1987. - xiv, 444 p. : ill. ; 26 cm. ISBN: 0070449635 Subjects--Topical Terms: Economics Programmed instruction. LC Class. No.: HB171.5 / .B56 1987