Mexico City: Siglo Veintiuno, 1978. erbackpap. 270p., wraps slightly worn and soiled, faint stamp on inside of rear wrap, else very good condition. Noted at rear as "impreso en talleres gráficos victoria, s.a. | jesús terán 9-a - méxico 1, d. f. | tres mil ejemplares | 9 de marzo dr 1978" Text in Spanish. Colección América nuestra ; 11.
On the economic and social organization of the Incas in the 15th century. The author argues that the Incas were an "archaic welfare state"