Los Tiempos Nuevos, Reflexiones Optimistas Sobre Le Guerra y la Revolucion.

Buenos Aires: Talleres Graficos "Cuneo", 1921. 12mo in color self-wrapper with photo of Ingenieros, 243p Very Good to VG+, with minor edge-wear. Paperback.

World War, 1914-1918 , Influence, Soviet Union, History , Revolution, 1917-1921.  Soviet Union, Social conditions.