Photocell applications 

 - London  ; The English Universities Press  , 1973 
 - 51p. 
<br/><br/><label>ISBN: </label>0340161035 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>620  / PHO