Sharp, Ansel Miree. Economics of social issues / Ansel M. Sharp, Charles A. Register, Richard H. Leftwich. - 11th ed. - Burr Ridge, Ill. : Irwin, c1994. - xii, 434 p. ; 24 cm. - The Irwin series in economics. . Includes index. Includes bibliographical references. ISBN: 025613751X (pbk.) Subjects--Topical Terms: Economics.Social problems.