Amacher, Ryan C. Principles of macroeconomics / by Ryan C. Amacher, Holley H. Ulbrich. - 4th ed. - Cincinnati : South-Western Pub. Co., 1989. - 511 p. : ill. ; 25 cm. Includes index Includes bibliographical references ISBN: 0538800763 Subjects--Topical Terms: Macroeconomics.