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Note: Latest version: IEC 60921:2004+AMD1:2006 CSV ED2.1
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Replaced
IEC 60082:1984 ED5
IEC 60082:1984/AMD1:1986 ED5
Revised
IEC 60921:1988 ED1
IEC 60921:1988/AMD1:1990 ED1
IEC 60921:1988/AMD2:1994 ED1
Current
IEC 60921:2004 ED2
IEC 60921:2004+AMD1:2006 CSV ED2.1