Ludwig Wittgenstein <br/><br/>
On certainity 
Ludwig Wittgenstein 
 - New York  J and J Harper Editions USA   1969 
<br/><br/><label>Standard No.: </label>233,112 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PHILOSOPHY
<br/><br/><label>Dewey Class. No.: </label>R3xM891,3, K9