Classified examples in electrical engineering, Vol-1: Direct Current 

 - 7th  
 - London  Sir Isaac Pitman & Sons  1948 
 - x,113p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical Engineering
<br/><br/><label>Dewey Class. No.: </label>621.3  / M745