Luskin, Bernard J. Introduction to economics : a performance - based learning guide / Bernard J. Luskin & Thomas Thresher - Philadelphia : W.B. Saunders ; 1977 - xiii, 583p. : ill. ; 26 cm. Includes bibliographical references and index. ISBN: 072165813X Subjects--Topical Terms: Economics Dewey Class. No.: 330 / LUS