Simmel, Georg, 1858-1918. On individuality and social forms; selected writings. Edited and with an introd. by Donald N. Levine. - Chicago, University of Chicago Press [1971] - lxv, 395 p. 21 cm. - The Heritage of sociology . Bibliography: p. 395. ISBN: 0226757757 0226757765 (pbk) Subjects--Topical Terms: Sociology.Social psychology. LC Class. No.: HM51 Dewey Class. No.: 301.11