Leon Trotsky : the challenge of the left opposition, 1928-29 / edited by Naomi Allen and George Saunders Allen, Naomi jt. ed. Saunders, George jt. ed. Communism Soviet Union 335.430947 LEO Glossary: p. 411-426. Includes bibliographical references and index New York : Pathfinder, 1981. 1981. 1981 Text 436 p. ; eng Soviet Union