Data pack F : 
Opto-electronics / 
 - London  Opto electronic  1948 
<br/><br/> contents not available 
<br/><br/><label>Subjects--Personal Names: </label><br/>H.Binns
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data pack
<br/><br/><label>Dewey Class. No.: </label>621,DAT