Zassenhaus, Hans. The theory of groups; [electronic resource] / translated from the German by Saul Kravetz.. — New York, : Chelsea Pub. Co.,, 1949.. — viii, 159 p. 24 cm. Translation of Lehrbuch der Gruppentheorie. Bibliography: p. 151-153. LCCN: 49048139 Subjects--Topical Terms: Group theory.Teoria Dos Grupos. LC Class. No.: QA171 / .Z312 Dewey Class. No.: 512.86