International Electrotechnical Vocabulary -Part 121: Electromagnetism Electromagnetic concepts and quantities Electromagnetic properties of materials Electric conduction
IEC 60050-121:1998 history
2021IEC 60050-121:1998/AMD5:2021 Amendment 5 - International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism
2021IEC 60050-121:1998/AMD4:2021 International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism; Amendment 4
2019IEC 60050-121:1998/AMD3:2019 Amendment 3 - International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism