International Electrotechnical Commission <br/><br/>
IEC: 62056-52 - 1998-11; Electricity Metering-Data Exchange for meter reading,tariff and load control - Part 52 - Communiction Protocols Management Distribution line Message Specification. 

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 - Geneva  IEC  1998 
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<br/><br/><label>ISBN: </label>2-8318-4570-x 
<br/><br/><label>Universal Decimal Class. No.: </label> /