Ayer, A J <br/><br/>
Problem of knowledge 

 - England  Penguin press  1956 
 - 224p.; 16cm. 
<br/><br/><label>ISBN: </label>140203774 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge<br/>Memory<br/>Philosophy<br/>Scepticism