Osram value manual 
General Electric Company                                     
 - London  General Electronic Company  1951 
 - 255p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electricity<br/>Electronics<br/>NASA Thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>621.385.1  / GEN