NEURATH Otto, and others Ed. <br/><br/>
International encyclopedia of Unified ecience. 

 - Chicago  University of Chicago          1955 
 - 760p.  cm. 
 -  Vol.1 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>AK.1, J5.1;6-10.RR/SC