Ash, William creator text mx México, D.F Era 1976 2 ed. monographic spa 155 p. /por William Ash Tít. original : Marxism and moral concepts. Nueva York : Monthly Review, 1964, 1 ed. Comunismo Socialismo Marxismo 335.411 As31 Nueva York : Monthly Review, 1964, 1 ed. 100753 110325 20220329143718.0