Russell, Bertrand, 1872-1970 Logic and Knowledge : Essays, 1901-1950 / Bertrand Russell ; editor Robert Charles Marsh - 1a ed. - London : George Allen & Unwin LTD, 1956 - 382 p. ; 22 cm. Subjects--Topical Terms: FilosofíaLógica simbólica y matemática LC Class. No.: B1649.R93 / L64 1956