De France, J. J. (Joseph J.), 1909-  De France, J. J. (Joseph J.), 1909- <br/><br/>
Direct current fundamentals. 

 - 2nd ed. 
 - Englewood Cliffs :  Prentice-Hall,  [1967] 
 - Prentice-Hall technical-industrial-vocational series .
<br/><br/> First published in this ed. in 1955. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric currents.