Amacher, Ryan C. Principles of economics / Ryan C. Amacher, Holley H. Ulbrich. - 3/e [i.e. 3rd ed.]. - Cincinnati : South-Western Pub. Co., c1986. - xiv, 913 p. : ill. ; 27 cm. Includes bibliographical references and index. ISBN: 0538086718 LCCN: 85050939 Subjects--Topical Terms: Economics. LC Class. No.: HB171.5 / .A397 1986 Dewey Class. No.: 330