Cotton, H <br/><br/>
Alternating Current machines. Ed - 2 

 - London  Cleaver-Hume Press Ltd.  1968 
 - 328p 
 -  Cleaver-Hume Electrical series No. <4=four>  Cotton, H .
<br/><br/><label>Universal Decimal Class. No.: </label>621.313.3  / COT.60