Ehrenberg, Ronald G. Modern labor economics : theory and public policy / Ronald G. Ehrenberg and Robert S. Smith. - 5th ed. - New York : HarperCollins, c1994. - xxii, 695 p. : ill. ; 24 cm. - The HarperCollins series in economics . Includes bibliographical references and index. ISBN: 0673467872 9780673467874 Subjects--Topical Terms: Labor economics. LC Class. No.: HD4901 / .E37 1994