Geppert, Donovan V. <br/><br/>
Basic electron tubes / 
Donovan V. Geppert 
 - 1st edition. 
 - New York :  McGraw-Hill,  c1951. 
 - 332 p. :  illus. ;  23 cm. 
 - McGraw-Hill electrical and electronic engineering series .
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vacuum-tubes.<br/>Electronics.
<br/><br/><label>Dewey Class. No.: </label>621.384132  / GEB 1951