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999 _c52245
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041 _aen
082 _a121
100 _aAYER, A.J.
_95878
245 4 _aThe Problem of Knowledge
260 _aLondon
_bPenguin Books
_c1956
300 _a224p.
650 _aTheory of Knowledge
_95879
650 0 _95577
_aHuman Philosophy
942 _cPR
_2ddc