00315nam a2200109Ia 4500008004100000040003800041100001500079245004100094260004100135300001400176653001500190211217s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aRussell, B 0aLigic and knowledge essays 1901-1950  bGeorge Allan and UnwinaLondonc1971  av, 382 p.  aPhilosophy