Ferns, J. L <br/><br/>
Meter engineering 

 - 5th ed. 
 - London  Pitman  1949 
 - x,350 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric Meters
<br/><br/><label>Dewey Class. No.: </label>621.373  / F361