Pollack, Harvey.  <br/><br/>
Photoelectric control /   
Harvey Pollack. 
 - New York :   John F. Rider Publisher,   1966. 
 - 136 p. 
 - Industrial electronics applications .
<br/><br/>Classes and principles of phototubes - Basic phototube relays - Measurement and indication by phototubes - Light-sensitive semiconductor devices - Industrial photocontrol devices 
<br/><br/><label>Subjects--Topical Terms: </label><br/>FOTOELECTRICIDAD<br/>FOTOTUBOS
<br/><br/><label>Universal Decimal Class. No.: </label>621.383