Williams, Emrys <br/><br/>
Thermonic Valve Circuits 
Emrys Williams                                              
 - 2nd ed. 
 - London  Sir Isaac Pitman and Sons  1947 
 - viii, 207p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Circuits<br/>Electronic Circuits<br/>Electronics<br/>NASA Thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>621.385  / WIL