Welsby, Vernon Gearon. <br/><br/>
The theory and design of inductance coils /  
by V.G. Welsby 
 - London :  Macdonald  [1950] 
 - 180 p.  illus.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ELECTRICIDAD<br/>BOBINAS
<br/><br/><label>Universal Decimal Class. No.: </label>621.3