Wittgenstein,Ludwig <br/><br/>
On Certainity/ 

 - United Kingdom  Blackwell pub  1969 
 - P105 
<br/><br/><label>ISBN: </label>0-631-16940-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Certainty
<br/><br/><label>LC Class. No.: </label>B 3376  /  .W56W58 1969