Amacher, Ryan C. Principles of macroeconomics / by Ryan C. Amacher, Richard James Sweeney, consulting editor Lloyd M. Valentine. - Cincinnati : South-Western Pub. Co., 1980. - xvi, 481 p. : ill. ; 24 cm. Includes index. Includes bibliographical references ISBN: 0538081406 Subjects--Topical Terms: Macroeconomics.