Ethan F. Becker Mastering Communication at Work - USA Ethan F. Becker and Jon Wortmann c2009. - viii, 332 p. : ill, ; 28 cm. Shelf # 12, Row # 1, System Engineering. ISBN: 9780071713450 Available Subjects--Topical Terms: Manage and Influence LC Class. No.: 658.4 BEC Dewey Class. No.: 658.4 BEC