Original standard IEC 60050-161-1990 amd3-2014 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-161-1990 amd4-2014 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-161-1990 amd5-2015 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-161-1990 amd6-2016 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-161-1990 amd7-2017 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-161-1990 amd8-2018 in PDF full version. Additional info + preview on request
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