Wittgenstein Ludwig <br/><br/>
Protoractatus    an early version of tractatus logico-philosophious ed by B F Mcguinness etc 

 - London  Routledge and Kegan Paul      1971 
 - 256p.  cm. 
<br/><br/><label>Standard No.: </label>71,690 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R3xM891,1, K1;L1