Simmel, Georg ,1858-1918. On individuality and social forms : selected writings Edited and with an introd. by Donald N. Levine - University of Chicago Press Chicago 1971 [1971] - lxv, 395 p.21 cm. - The Heritage of sociology . Bibliography: p. 395. ISBN: 0226757757 Subjects--Topical Terms: SociologySocial psychology--HM LC Class. No.: HM51.S537