Lange Bruno <br/><br/>
Photoelements and their application 

 -  1938 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>28445 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>C6:45, G8