00487pamaa2200157 4500 0000020327 20060421090000.0 [ nil ] 121.04 ROY 1970 BD161 ROY 1970 ROYAL Institute of philosophy lectures volume 3, 1968-1969 : knowledge and necessity. London: Macmillan/St. Martin's Press, 1970. xxi, 284p.; 21cm. Philosophy Royal Institute of Philosophy Knowledge and necessity