Tolmie, Jack Roderick. <br/><br/>
The characteristic surface of the thermionic valve, 
by Jack Roderick Tolmie. 
 - Seattle, Wash.,  The University,  1924. 
 - 22 p.  illus., diagrs.  23 cm. 
 - Washington. University. Engineering Experiment Station. Engineering Experiment Station series. Bulletin  no. 24 .
<br/><br/><label>LCCN: </label>gs 24000189  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vacuum-tubes.<br/>Valves.<br/>Electric apparatus and appliances.
<br/><br/><label>LC Class. No.: </label>TK5865  / .T6