Wagner, C.F. (Charles Frederick)- <br/><br/>
Symmetrical components  as applied to the analysis of unbalanced electrical circuits/ 
C.F.Wagner and R.D.Evans with an introduction by C.L.Fortescue 
 - New York  McGraw-Hill Book  1933 
 - 437p. ;  24cm. 
<br/><br/><label>ISBN: </label>0070676607 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric circuits