Brown, Gary D. Survey of economic principles [by] Gary D. Brown. - Homewood, Ill. D. Irwin 1972. - xiii, 411 p. illus. 24 cm. - The Irwin series in economics . 920331 Includes bibliographical references. LCCN: 71180497 Subjects--Topical Terms: Economics LC Class. No.: HB171.5 / .B69837 Dewey Class. No.: 330