Ledermann, Walter, 1911-2009 Introduction to group characters / Walter Ledermann. - 2nd ed. - Cambridge [Cambridgeshire] ; New York : Cambridge University Press, 1987. - x, 227 p. ; 24 cm. Includes index. Bibliography: p. 224-225. ISBN: 9780521337816 052133781X (pbk.) LCCN: 86018766 Subjects--Topical Terms: Characters of groups. LC Class. No.: QA171 / .L46 1987 Dewey Class. No.: 512.22 / LED/I