Ayer, A. J. <br/><br/>
The problem of knowledge / 
A.J.Ayer 
 - England :  Penguin Books,  1956 [reprinted 1972] 
 - 258 p. ; 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>SC&SSBK58 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge, theory of.
<br/><br/><label>Dewey Class. No.: </label>121  / Pr