Bettridge, B R <br/><br/>
Transistors and crystal diodes : what they are and how to use them 
Bernard Robert Arthur Bettridge 
 - London  Norman Price  1954 
 - ix, 72p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics<br/>NASA Thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>621.382.3  / BET