331.88 Zie J Zieger, Robert H. John L. Lewis : labor leader / Robert H. Zieger. -- Boston : Twayne, 1988. xviii,220 p. : fot. ; 25 cm. -- (Twayne´s Twentieth-Century American Biography Series) ´´Selected Bibliography´´: p. 209-213 Incluye Indice. ISBN 0-8057-7763-6 1.LEVIS, JOHN LLEWELLYN, () 1880-1969 2.SINDICATOS – U.S. – BIOGRAFIA 3.SERVICIO CIVIL I.t.