Appleton [e V],  <br/><br/>
Thermonic Vacum Tubes 

 - Kozhikode  Mathrubhumi  1946 
<br/><br/><label>Subjects--Uniform Titles: </label>--General Stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>ScienceVacuum-tubes--Electronics--Physics
<br/><br/><label>Dewey Class. No.: </label>537.53  / APP-T