Bingham, Robert C. Economic concepts : a programmed approach / Robert C. Bingham ; revised by William Henry Pope. - 10th ed. - New York : McGraw-Hill, c1993. - xi, 448 p. : ill. ; 26 cm. ISBN: 0070455910 Subjects--Topical Terms: Economics--Programmed instruction. LC Class. No.: HB171.5 / B51 1993