The ruling class : (Elementi di scienza politica). / Gaetano Mosca. Translation by Hannah D. Kahn. Edited and revised with an introduction, by Arthur Livingston. Elementi di scienza politica. English Mosca, Gaetano, 1858-1941. Kahn, Hannah D., tr. Livingston, Arthur, 1883-1944, ed. Political science. JC265 .M62 320 MOT "Index and bibliography": p. 495-514. New York, London : McGraw-Hill book, 1939. 1939. 1939 Text xli, 514 p. ; eng eng ita