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Note: This standard has a new edition: IEC 60721-1:1990+AMD1:1992+AMD2:1995 CSV
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Revised
IEC 60721-1:1981 ED1
Published
IEC 60721-1:1990 ED2
IEC 60721-1:1990/AMD2:1995 ED2
IEC 60721-1:1990/AMD1:1992 ED2
