academics.ut.ac.ir · Ayer, AA. The Problem of Knowledge, Hammondsworth: Penguin Books, Ayer,...
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academics.ut.ac.ir · Ayer, AA. The Problem of Knowledge, Hammondsworth: Penguin Books, Ayer, A.J.The Foundations of Empirical Knowledge, London: Macmillan, St. Martin's Press, Chisholm,