Spykman, Nicholas J. 1893-1943. The social theory of Georg Simmel / by Nicholas J. Spykman. - New York : Atherton Press, 1966. - xxix, 291 p.; 23 cm. Includes bibliographical references ( p. 274-289.) Subjects--Personal Names: Simmel, Georg, 1858-1918. Subjects--Topical Terms: Sociology. Dewey Class. No.: 301