ENGELS <br/><br/>
Dialectics of nature. 

 - Moscow  Progress pub.        1934 
 - 403p.  cm. 
<br/><br/> Bibliography :P.374-381 
<br/><br/><label>Standard No.: </label>179455 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X:3M24xM20, J4/SC"