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EVS-EN 50122-1:2005 Raudteealased rakendused. Kohtkindlad paigaldised. Osa 1, Kaitsemeetmed elektriohutuse tagamiseks ja maandamisel = Railway applications. Fixed installations. Part 1, Protective provisions relating to electrical safety and earthing
Translator: Elmo Pettai, Author: Eesti Standardikeskus