Photoelectric tubes /  
A. Sommer 
 - London  Methuen  1951. 
 - 118p 
<br/><br/>Historical Introduction (Page-1), Theories Of Photoelectric Emission (Page-3), Photoelectric Cathodes (Page-18), Matching Of Light Sources And Photo Cathodes (Page-49), Vacuum Photocells (Page-62), Gasfilled Photocells (Page-66), Multiplier Photocells (Page-79), Applications Of Photocells (Page-90). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication Engineering.
<br/><br/><label>Dewey Class. No.: </label>621.38157452,SOM