Heafford, Philip E.  <br/><br/>
Electric currents / 
Philip E. Heafford ; edited by Charles H. Dobinson. 
 - London :  Longmans,   1956. 
 - 80 p. :  ill. ;  22 cm. 
 - Science on the March  unight Eight .
<br/><br/>310  310 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical engineering.
<br/><br/><label>Dewey Class. No.: </label>621.31 / H346e