Ayer, A. J.  1910-1989. <br/><br/>
The problem of knowledge / 
A.J. Ayer. 
 - London :  Penguin Books,  1990, c1956. 
 - [224] p. ;  20 cm. 
 - Penguin philosophy .
 - Penguin philosophy. .
<br/><br/> Includes index. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0140135472 9780140135473 (pbk.)  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge, Theory of.