Original standard IEC 60050-161-1990 amd9-2019 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-171-2019 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-191-1990 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-191-1990 amd1-1999 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-191-1990 amd2-2002 in PDF full version. Additional info + preview on request
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Original standard IEC 60050-192-2015 in PDF full version. Additional info + preview on request
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