Ayer, A. J. <br/><br/>
The Problem of Knowledge / 

 - England :  Penguin Books,  1956. 
 - 224 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge, Theory of.
<br/><br/><label>Dewey Class. No.: </label>121  / AYE