Canfield, Donald D. T.  <br/><br/>
Vector representation for electrical metermen 

 - New York, London :   McGraw-Hill,   1931. 
 - xi, 180 p. : gráf. ; 21cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CORRIENTE ALTERNA<br/>FACTOR DE POTENCIA
<br/><br/><label>Universal Decimal Class. No.: </label>IV-27