Wittgenstein Ludwig <br/><br/>
Prototractatus . 

 - London  Routledge and Kegan Paul      1971 
 - 256p.  cm. 
<br/><br/><label>Standard No.: </label>113180 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R3xM891,TLP, L1