The ruling class : Elementi di scienza politica / by Gaetano Mosca ; translation by Hannah D. Kahn ; edited and rev., with an introd. by Arthur Livingston. Elementi di scienza politica. English Mosca, Gaetano, 1858-1941. Livingston, Arthur, 1883- Kahn, Hannah D. Political science. 301.4 MOR Translation of 'Elementi di scienza politica'. "Index and bibliography": p. 495-514. New York : McGraw-Hill, 1939. 1939. 1939 Text xli, 514 p. : eng engita