Sommer, A. H.  1909- <br/><br/>
Photoelectric cells, 
by A. Sommer. 
 - London,  Methuen  [1946] 
 - viii, 104 p.  diagrs.  18 cm. 
<br/><br/> "First published in 1946." 
<br/><br/><label>LCCN: </label>47022679  
<br/><br/><label>Subjects--Topical Terms: </label><br/>FOTOELECTRICIDAD
<br/><br/><label>Dewey Class. No.: </label>537.53