Conroy, George J. <br/><br/>
Potential  uses for 400-Hz electrical power systems in mining  
Conroy, George J. 
 - Washington  Bureau of mines  1974 
 - 10 p. 
 - RI 7857 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENERGIA<br/>ENERGY
<br/><br/><label>Subjects--Index Terms: </label>MINERIA ENERGIA ELECTRICA MINING ELECTRIC ENERGY 
<br/><br/><label>Universal Decimal Class. No.: </label>620