Case, Karl E Principles of economics. (9th ed.) by Karl, E. Case; Ray C. Fair; Sharon M. Oster - 9th ed. - Upper Saddle River, New Jersey: Pearson 2009 - 811p.: ill Accompanied by a Student Access Kit. (See Cybrary staff) ISBN: 0137141459 Subjects--Topical Terms: ECONOMICS LC Class. No.: HB 171.5 Cas