Ayer, A. J.  1910-1989. <br/><br/>
The problem of knowledge. 

 - London,  New York,  Macmillan;  Penguin Books  1956. 
 - 223 p.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge, Theory of.
<br/><br/><label>Dewey Class. No.: </label>121 AYE