Managerial economics : economic tools for today's decision makers / Paul G. Keat, Philip K.Y. Young, Stephen E. Erfle. Keat, Paul G. Young, Philip K. Y. Erfle, Stephen E. (Stephen Eugene) Managerial economics. HD30.22 .K39 2013 338.50246 23 KEM Includes bibliographical references and index. Boston : Pearson, c2013. c2013. 2014 Text xxvi, 593 p. : eng