IEC <br/><br/>
IEC: 60076-10-2001; Power transformers part 10 ; Determination of sound levels 

 - Geneva  International Electrotechnical commission  2001 
 - 35 
<br/><br/><label>ISBN: </label>2-8318-5772-4 
<br/><br/><label>Universal Decimal Class. No.: </label> /