McConnell, Campbell R. Economics: principles, problems and policies / Campbell R. McConnell, Stanley L. Brue, Sean M. Flynn. - 21st Edition. - New York : McGraw-Hill Education, c2018. - xxxv, 1032 pages : illustrations ; 24 cm. Includes bibliographical references and index. ISBN: 9781259921971 (pbk.) 1259921972 (pbk.) Subjects--Topical Terms: Economics. LC Class. No.: HB171.5 / M12 2018 Dewey Class. No.: 330 / MCC 2018