Tube substitution handbook. 
Howard W. Sams & Co. Engineering Staff. 
 - Indianapolis:  Howard W. Sams,  1977. 
 - 111p.: 
<br/><br/><label>ISBN: </label>0672214059 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Television picture tubes .<br/>Vacuum-tubes.
<br/><br/><label>LC Class. No.: </label>TK6565  / .H69 1977