Skinner, B.F. (Borruhs Frederic), 1904-1990 Walden dos / B.F. Skinner - 5a. ed. - Barcelona : Fontanella, 1976 - xvii, 355 p. ; 19 cm. - Pensamiento ; 20 . Traducción de: Walden Two ISBN: 8424403978 Subjects--Topical Terms: Utopias LC Class. No.: HX 811 / S4518 1976