Wittgenstein L <br/><br/>
Preliminary studies for the philosophical investigation generally known as the blue and brown books 

 -  1958 
<br/><br/><label>Standard No.: </label>71,725 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R3xM892:1, J8