Weber, G.  <br/><br/>
The illumination of photographic darkrooms and the determination of the soectral sensitivity of photographic material 
G. Weber  
 - USA  American Raio Relay League  1950 
 - 277p.  diagrams 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photographic DarkroomsPhotography
<br/><br/><label>Universal Decimal Class. No.: </label>771.1.001.5  / WEB