Ayer, A. J.  1910- <br/><br/>
The problem of knowledge / 
A.J. Ayer. 
 - Harmondsworth :  Penguin,  1956. 
 - 223 p. ;  19 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge, Theory of