Ayer, A. J. <br/><br/>
Language truth and logic / 
A. J. Ayer 
 - New York :  Penguin Books,  1936       
 - 206 p. 
<br/><br/><label>ISBN: </label>0140136592 
<br/><br/><label>LC Class. No.: </label>B 53 A976l 1936